The relics and remains of Buddha are housed in the Boudha stupa, which is formed like a semicircle. The stupa has a vast mandala, making it one of the world's largest spherical stupas. UNESCO inscribed Boudha Stupa as a world heritage site in 1979, and it is one of Kathmandu's most prominent 

The enormous stupa of Boudhanath in Kathmandu is one of Nepal's greatest and most important pilgrimage and tourist destinations. It is estimated to have been built by a ruler of the Nepalese Licchavi Kingdom in the late 6th century CE, and then enlarged and expanded upon, most likely in the 14th century CE tourist attractions.

On ordinary days, hundreds of Buddhists flock to the Bauddhanath Stupa to offer prayers. Only a few monks were spotted giving prayers and circumambulating the stupa because to the COVID-19 outbreak and prohibitive regulations imposed in the valley. 

On the festival of Buddha Jayanti, the general public is not permitted to visit Bauddhanath. 

According to the Lunar Calendar, today is Baisakh Shukla Purnima, or the 2565th Buddha Jayanti — the day of Lord Buddha's birth. The rare full moon day is commemorated by paying honor to Siddhartha Gautam, who is thought to be Lord Bishnu's ninth incarnation.