Boudhanath Stupa (Bodnath Stupa) located in the town of Boudha is on the eastern outskirts of Kathmandu. It is one of the most imposing landmarks in Kathmandu, visible when you come to land at Tribhuvan International Airport.
Boudhanath is said to have been built in the 14th century after the Mughal invasion. Since the arrival of Tibetans following the 1959 Chinese invasion, Boudhanath has been one of the most important centers for Tibetan Buddhism. It is the largest stupa in Nepal and it is the holiest Tibetan Buddhist temple outside of Nepal. Boudhanath hosts one of the largest festivals during the festival of Losar (Tibetan New Year).
The noticeable features of the stupa is that it looks like a giant mandala (from the top) and that it is topped with a square tower bearing the omnipresent Buddha eyes on all four sides.