Which Istanbul landmark opened first, the Rahmi M. Koç Museum or the Endem TV Tower?
Rahmi M. Koç Museum
Title: Kherson TV Tower
Passage: Kherson TV Tower (Ukrainian: Херсонська телевежа "Kherson TV Tower") is a 200 m tall space framed Ukrainian truss communications tower that is made of steel.  The building is uniquely built, having been built by using the cross bracing system.  The tower is a truss TV tower, specifically, a Vierendeel truss tower, wherein a structure's members are not triangulated but form rectangular openings instead (see Vierendeel Truss).  The tower has an antenna that measures 199.95 m and a roof that measures 189.89 m .  The tower, possessing a total height of 200 m , is also considered the tallest structure in the whole oblast (province) of Kherson'ka.
Title: Endem TV Tower
Passage: Endem TV Tower is a TV tower in Beylikdüzü, Istanbul, Turkey.  It was built between 1998 and 2002, and has a now closed revolving restaurant 154 m above ground, as well as an observation deck at 160 m .  The total height of the tower si 257 m including the antenna.
Title: Rahmi M. Koç Museum
Passage: The Rahmi M. Koç Museum is a private industrial museum in Istanbul, Turkey dedicated to history of transport, industry and communications.  Rahmi M. Koç, member of the wealthiest dynasty in Turkey and retired boss of the Koç Group, founded the museum in 1991, which was opened on December 13, 1994.  The museum is located in the suburb of Hasköy on the north shore of the Golden Horn and situated in two historical buildings connected to each other.  It is open to public every day except Monday.  The museum's general manager is Ertuğrul Duru.
Rahmi M. Koç Museum Endem TV Tower