Situated below Shivapuri hill at the northern end of the valley, Buddhanilkantha temple is 9 km from Kathmandu city. The temple consists of a pond in which lies a great stone figure of the Hindu god Vishnu reclining on the coils of a cosmic serpent. The huge statue of sleeping Vishnu is carved from the single block of black stone of a type not found in the valley. It is believed that ages before two hardworking farmers (husband and wife) discovered the statue when they were ploughing their field.
Besides Budhanilkantha temple, there are two sets of exactly similar, but smaller statues of 'sleeping Vishnu' in the Valley. One set is in the Balaju garden and the other is hidden in the old garden of Hanuman Dhoka Palace of Kathmandu city. A prophetic dream of King Pratap Malla generated the belief that the King of Nepal should never visit Buddhanilkantha temple on threat of death. He then built the similar statue in two places.