Budhanilkantha Temple (Nepali: बुढानिलकण्ठ मन्दिर; Old Blue Throat) is a Hindu open air temple dedicated to Lord Mahavishnu.
The site pays homage to Vishnu, whose likeness floats on the sea of bliss reclining upon the multi-headed snake Shesh. It’s believed the 5-m long sculpture (the largest stone sculpture in Nepal) is made from a single block of basalt, and was created during the 500s CE by Vishnugupta, an early king of the Kathmandu Valley.