Boudhanath Stupa, which is one of the most magnificent landmark of Kathmandu Valley and is the oldest and most sacred Buddhist Monument in the world. It has a unique architect with its three level Mandala style structure, above which is the all seeing eyes of the Buddha. This Stupa was built in the 5th century. Every year thousands of tourists visit this unique Buddhist pilgrimage site and for people of Buddhists faith it is a must for them to pay homage to this sacred place and pray for World Peace.