Throughout the thousand years of its eventful history, marked by destruction, wars and natural calamities, Hanoi still preserves many ancient architectural works including the Old Quarter and over 600 pagodas and temples. Famous sites include the One Pillar Pagoda (built in 1049), the Temple of Literature (built in 1070), Hanoi Citadel, Hanoi Opera House, President Ho Chi Minh’s Mausoleum……