 Imperior sites are mostly in Ba Đình District and a bit of Đống Đa District.They are juxtaposed with French colonial architecture (villas, administrative buildings and tree-lined boulevards).Some prominent edifices from feudal time include the Temple of Literature ("Văn Miếu"), site of the oldest university in Vietnam which was started in 1010, the One Pillar Pagoda ("Chùa Một Cột") which was built based on the dream of king Lý Thái Tông (1028-1054) in 1049, and the Flag Tower of Hanoi ("Cột cờ Hà Nội").