Yen Tu Monastery on Yen Tu mountain is a sacred Buddhist pilgrimage destination. Thousands come here to ask the spirit of Tran Nhan Tong to intercede for them. You can see a 138-ton statue of the king who became a monk here as well as the lotuslike Dong Pagoda (made of 70 tons of bronze). Cable cars ascend to the peak for those who want to skip the six-kilometer (four-mile) hike. When the mists descend, the complex may be less photogenic but it becomes much more atmospheric. Dress appropriately and don't sit with the soles of your feet facing statues or other people.