Instruct: Given a question, retrieve relevant documents that answer the question.
Query: When did construction of Angkor Wat begin?
Angkor Wat (; , "Capital Temple") is a temple complex in Cambodia and one of the largest
religious monuments in the world, on a site measuring . Originally constructed as a Hindu temple dedicated to the god Vishnu for the Khmer Empire, it was gradually transformed into a Buddhist temple towards the end of the 12th century. It was built by the Khmer King Suryavarman II in the early 12th century in Yaśodharapura (, present-day Angkor), the capital of the Khmer Empire, as his state temple and eventual mausoleum. Breaking from the Shaiva tradition of previous kings, Angkor Wat was instead dedicated to Vishnu. As the best-preserved temple at the site, it is the only one to have remained a significant religious centre since its foundation. The temple is at the top of the high classical style of Khmer architecture. It has become a symbol of Cambodia, appearing on its national flag, and it is the country's prime attraction for visitors.
Permission to return to Savannakhet was issued in early 1994 by the Government of Laos. After another year of waiting in the Vat Xayaphoum Temple in Savannakhet, the statue was ceremoniously erected on Saturday, January 7, 1995 by the family and officials, on the private land adjacent to the family residence. On this occasion, a host temple for monks and travelers (ກຸຕິ) was built and offered to the Vat Xayaphoum Temple by the family of Nang Somnuk (married Simukda – ນາງສົມນຶກ ສີມຸກດາ) – one of Kou Voravong's three half-sisters – in association with Thao Anouroth, the youngest son.
Beginning in 2010, Miriam T. Stark joined the third phase of research investigating what was deemed the “demise of Angkor”. This research project was conducted by the University of Sydney and was labeled as the Greater Angkor Project. The study examined occupational patterning in the Greater Angkor region and focused on locations such as the Angkor Wat temple. In both 2010 and 2012, Stark worked as a GAP III co-investigator in the Greater Angkor region, testing habitations in an attempt to determine residence of Angkorian and Post-Angkorian societies. Locations studied and tested included but were not limited to Angkor Wat, Ta Prohm, Wat Athvea, and Wat Prei Einkosei. Prior to this research, very little work had been done in regards to the study of residence in these regions.
The history of Bangkok dates at least back to the early 15th century, when it was a village on the west bank of the Chao Phraya River, under the rule of Ayutthaya. Because of its strategic location near the mouth of the river, the town gradually increased in importance. Bangkok initially served as a customs outpost with forts on both sides of the river, and was the site of a siege in 1688 in which the French were expelled from Siam. After the fall of Ayutthaya to the Burmese Empire in 1767, the newly crowned King Taksin established his capital at the town, which became the base of the Thonburi Kingdom. In 1782, King Phutthayotfa Chulalok (Rama I) succeeded Taksin, moved the capital to the eastern bank's Rattanakosin Island, thus founding the Rattanakosin Kingdom. The City Pillar was erected on 21 April 1782, which is regarded as the date of foundation of the present city.
While there is evidence that the hill was inhabited as far back as the fourth millennium BC, it was Pericles (c. 495 – 429 BC) in the fifth century BC who coordinated the construction of the site's most important present remains including the Parthenon, the Propylaia, the Erechtheion and the Temple of Athena Nike. The Parthenon and the other buildings were damaged seriously during the 1687 siege by the Venetians during the Morean War when gunpowder being stored in the Parthenon was hit by a cannonball and exploded.
The Parthenon (; ; , "Parthenónas") is a former temple on the Athenian Acropolis, Greece, dedicated to the goddess Athena, whom the people of Athens considered their patron. Construction began in 447 BC when the Athenian Empire was at the peak of its power. It was completed in 438 BC, although decoration of the building continued until 432 BC. It is the most important surviving building of Classical Greece, generally considered the zenith of the Doric order. Its decorative sculptures are considered some of the high points of Greek art. The Parthenon is regarded as an enduring symbol of Ancient Greece, Athenian democracy and Western civilization, and one of the world's greatest cultural monuments. To the Athenians who built it, the Parthenon and other Periclean monuments of the Acropolis were seen fundamentally as a celebration of Hellenic victory over the Persian invaders and as a thanksgiving to the gods for that victory. As of 2007 the Greek Ministry of Culture was carrying out a programme of selective restoration and reconstruction to ensure the stability of the partially ruined structure.
In Cambodia, a wat is any place of worship. "Wat" generally refers to a Buddhist place of worship, but the precise term is "wat putthasasana". A Christian church can be referred as "vihear Yesaou" or "Jesus "vihear"". Angkor Wat means 'city of temples'.
The Rattanakosin Kingdom (, ) is the fourth and present traditional centre of power in the history of Thailand (or Siam). It was founded in 1782 with the establishment of Bangkok as the capital city. The period ended with the Siamese revolution of 1932.
The Synod of Westminster in 1102 is recorded as taking measures to restore Bangor Cathedral, but the earliest part of the present building was built during the episcopate of Bishop David (1120–1139) with the assistance of the king of Gwynedd, Gruffudd ap Cynan, who donated money towards the project and was buried by the high altar on his death in 1137. This was a cruciform building in the Norman style, about 44 yards in length. Gruffudd's son, Owain Gwynedd, was also buried here, as was his brother Cadwaladr. Giraldus Cambrensis describes a service held here in 1188 when the Archbishop of Canterbury celebrated Mass.
In the mid-5th century BC, when the Athenian Acropolis became the seat of the Delian League and Athens was the greatest cultural centre of its time, Pericles initiated an ambitious building project that lasted the entire second half of the century. The most important buildings visible on the Acropolis today — the Parthenon, the Propylaia, the Erechtheion and the temple of Athena Nike — were erected during this period. The Parthenon was built under the general supervision of the artist Phidias, who also had charge of the sculptural decoration. The architects Ictinos and Callicrates began their work in 447 BC, and the building was substantially completed by 432, but work on the decorations continued until at least 431.
Gorgons were a popular image in Greek mythology, appearing in the earliest of written records of Ancient Greek religious beliefs such as those of Homer, which may date to as early as 1194–1184 BC. Because of their legendary and powerful gaze that could turn one to stone, images of the Gorgons were put upon objects and buildings for protection. An image of a Gorgon holds the primary location at the pediment of the temple at Corfu, which is the oldest stone pediment in Greece, and is dated to c. 600 BC.
The first endeavour to build a sanctuary for on the site of the present Parthenon was begun shortly after the Battle of Marathon (c. 490–488 BC) upon a solid limestone foundation that extended and levelled the southern part of the Acropolis summit. This building replaced a "hekatompedon" (meaning "hundred-footer") and would have stood beside the archaic temple dedicated to "Athena Polias" ("of the city"). The Older or Pre-Parthenon, as it is frequently referred to, was still under construction when the Persians sacked the city in 480 BC and razed the Acropolis.
Starting from 1959 and during six years, with the financial support of the CIA, the general Phoumi Nosavan became the dominant figure in the Laotian political life. At the height of his career in May 1960, thanks to his relationship with Sarit Thanarat – the current Thai Prime Minister – and in association with Ou and Bounthong Voravong, he commissioned and financed a life-size statue of Kou Voravong at the Department of Fine Arts of the Ministry of Culture of Thailand. In Savannakhet, a "Kou Voravong Stadium" was built at the extreme north of the avenue of the same name, and the site of the statue was planned on an esplanade just at the entrance.
Construction of the Colosseum began under the rule of Vespasian in around 70–72 AD (73–75 AD according to some sources) The Colosseum had been completed up to the third story by the time of Vespasian's death in 79. The top level was finished by his son, Titus, in 80, and the inaugural games were held in AD 80 or 81. Dio Cassius recounts that over 9,000 wild animals were killed during the inaugural games of the amphitheatre. Commemorative coinage was issued celebrating the inauguration. The building was remodelled further under Vespasian's younger son, the newly designated Emperor Domitian, who constructed the "hypogeum", a series of underground tunnels used to house animals and slaves. He also added a gallery to the top of the Colosseum to increase its seating capacity.
Originally announced in 1923, the construction of the base proceeded slowly at Sembawang until the Japanese invasion of Manchuria in 1931. It was completed in 1938, at a staggering cost of £60 million – equivalent to £2½ billion in 2006. The base covered and had what was then the largest dry dock in the world, the third-largest floating dock, and enough fuel tanks to support the entire British Navy for six months.
The site has been used for religious buildings since at least the 4th century, when an oratory stood on the site. A cathedral was built in the 9th century, but was badly damaged by Norman invasions and was replaced in the 10th century, from about 940, when bishop Milo built a Romanesque cathedral. This building was the location of the Council of Troyes that opened on 13 January 1128/29, at which the Order of the Knights Templar was confirmed and its rule established. The Romanesque cathedral was destroyed by fire in 1188.
Watson Brake is an archaeological site in present-day Ouachita Parish, Louisiana, from the Archaic period. Dated to about 5400 years ago (approx. 3500 BCE), Watson Brake is considered the oldest earthwork mound complex in North America. It is older than the Egyptian pyramids or England’s Stonehenge. Its discovery and dating in a paper published in 1997 changed the ideas of American archaeologists about ancient cultures in the Southeast and their ability to manage large, complex projects over centuries. The archeologists revised their date of the oldest earthwork construction by nearly 2000 years, as well as having to recognize that it was developed over centuries by a hunter-gatherer society, rather than by what was known to be more common of other, later mound sites: a more sedentary society dependent on maize cultivation and with a hierarchical, centralized polity.
Sidoktaya is one of the oldest ancient towns in Myanmar. It is established by Prince Yazakumar (a. Min Zaya Khittaya or Min Thiri Khittaya) in Year 460 (Myanmar Era) (about 1098 A.D.). Now it is over 900 years of age. there are many archaeological places including Si-kyek-taung Pagoda, Aung-kyar Thiri Pagoda, and Sutaungpyi Pagoda. The ancient city wall had been found buried in some places.
The year 1851 was the 70th year of the Rattanakosin Kingdom of Siam (now known as Thailand). It was the 28th and last year in the reign of King Nangklao (Rama III), and the first year in the reign of King Mongkut (Rama IV).
Beikthano ( ) situated in the irrigated Minbu region (near present-day Taungdwingyi) with direct land access to the well-watered Kyaukse plains to its northeast, is the oldest urban site so far discovered and scientifically excavated site. Its remains—the structures, pottery, artefacts, and human skeletons—date from 200 BCE to 100 CE. Named after the Hindu god Vishnu, the city may be the first capital of a culturally and perhaps even politically uniform state in the history of Burma. It was a large fortified settlement, measuring approximately 300 hectares inside the rectangular (3 km by 1 km) walls. The walls and fortifications along it measured six meters thick, and are radiocarbon dated to a period between 180 BCE and 610 CE. Like most subsequent cities, the main entrance of the walls led to the palace, which faced east. Stupas and monastic buildings have also been excavated within the city walls.
Metal tools first appeared in Wales about 2500 BC, initially copper followed by bronze. The climate during the Early Bronze Age (c. 2500–1400 BC) is thought to have been warmer than at present, as there are many remains from this period in what are now bleak uplands. The Late Bronze Age (c. 1400–750 BC) saw the development of more advanced bronze implements. Much of the copper for the production of bronze probably came from the copper mine on the Great Orme, where prehistoric mining on a very large scale dates largely from the middle Bronze Age. Radiocarbon dating has shown the earliest hillforts in what would become Wales, to have been constructed during this period. Historian John Davies, theorises that a worsening climate after around 1250 BC (lower temperatures and heavier rainfall) required more productive land to be defended.
Mouhot is often mistakenly credited with "discovering" Angkor, although "Angkor was never lost" — the location and existence of the entire series of Angkor sites was always known to the Khmers and had been visited by several westerners since the 16th century. 
Mouhot mentions in his journals that his contemporary Father Charles Emile Bouillevaux, a French missionary based in Battambang, had reported that he and other Western explorers and missionaries had visited Angkor Wat and the other Khmer temples at least five years before Mouhot. Father Bouillevaux published his accounts in 1857: ""Travel in Indochina 1848–1846, The Annam and Cambodia"".
Previously, a Portuguese trader Diogo do Couto visited Angkor and wrote his accounts about it in 1550, and the Portuguese monk Antonio da Magdalena had also written about his visit to Angkor Wat in 1586.
In December 2015, it was announced that a research team from University of Sydney had found a previously unseen ensemble of buried towers built and demolished during the construction of Angkor Wat, as well as massive structure of unknown purpose on its south side and wooden fortifications. The findings also include evidence of low-density residential occupation in the region, with a road grid, ponds and mounds. These indicate that the temple precinct, bounded by moat and wall, may not have been used exclusively by the priestly elite, as was previously thought. The team used LiDAR, ground-penetrating radar and targeted excavation to map Angkor Wat.
Angkor Wat, located at , is a unique combination of the temple mountain (the standard design for the empire's state temples) and the later plan of concentric galleries. The construction of Angkor Wat also suggests that there was a celestial significance with certain features of the temple. This is observed in the temple's east-west orientation, and lines of sight from terraces within the temple that show specific towers to be at the precise location of the sunrise on a solstice. The temple is a representation of Mount Meru, the home of the gods: the central quincunx of towers symbolises the five peaks of the mountain, and the walls and moat symbolise the surrounding mountain ranges and ocean. Access to the upper areas of the temple was progressively more exclusive, with the laity being admitted only to the lowest level.
The temple is a powerful symbol of Cambodia, and is a source of great national pride that has factored into Cambodia's diplomatic relations with France, the United States and its neighbour Thailand. A depiction of Angkor Wat has been a part of Cambodian national flags since the introduction of the first version circa 1863. From a larger historical and even transcultural perspective, however, the temple of Angkor Wat did not become a symbol of national pride "sui generis" but had been inscribed into a larger politico-cultural process of French-colonial heritage production in which the original temple site was presented in French colonial and universal exhibitions in Paris and Marseille between 1889 and 1937. Angkor Wat's aesthetics were also on display in the plaster cast museum of Louis Delaporte called "musée Indo-chinois" which existed in the Parisian Trocadero Palace from c.1880 to the mid-1920s.