Construction of residences for academic staff, cafeterias, student dormitories, and various academic buildings followed rapidly. Many were housed in crowded unsanitary dormitories. Interrogation rooms, cells, dormitories and conference halls are provided. Some colleges and university coeducational dormitories also feature coeducational bathrooms. Dormitories and apartments on campus provide affordable housing. There are also six dedicated undergraduate dormitories located on campus. There are eight dormitories on campus. They sleep in bunk beds in two large dormitories. Campers slept in wigwams, tents, or open dormitories. Undergraduates live in 80 different houses, including dormitories, co-ops, row houses, and fraternities and sororities. AUB's campus in Ras Beirut consists of 64 buildings, seven dormitories and several libraries. The college hosted as many as 1,900 military personnel in the vacated dormitories and fraternities. The students sleep in their House dormitories, which branch off from the common rooms. Two of the original bunks in the dormitories remain. Smith College has many different houses serving as dormitories.