Godessess Bajrayogini cleaved the mountain to drain the water, similar to the one done by Manjushri for Kathmandu Valley.

Bajrayogini then instructed the priest Jogdev and the first King Sankhadev to build the town of Sankhu in the shape of a conch shell.

[3] Sankhu is also mentioned in the story of Swasthani, where it is named as Lavanya desa where a Brahmin boy is subsequently made the king by marrying the princess Chandravati.

The city was built on a trade route form Kathmandu to Kuti, Shigatse and Lhasa in Tibet.

Before Malla Dynasty in Nepal, Sankhu is believed to be a separate kingdom because of the presence of the historical Durbar square (Layaku), but this is still debated.

There is mention about Sankhu in 1334AD as the place where a person named Snkhu Mulmi stole ornaments of Brahmins.

Prithvi Narayan Shah's initial plan was to capture Sanku before attacking Kathmandu because it was a trade route to Tibet.

A note from Colonel Kirkapatrick from 1793 mentions about the town of Sakhu as a place of great magnitude in the past but does not at present above a thousands families.

[5] The Gorkhali kings turned Sankhu into Jagir to reward its functionaries by the Queen with an annual word of NPR 4000.

In Rana period, a Darbare was appointed who acted as the town chief and looked after local administration.

Naari Dhwakha : During the Shalinadi festival, the Holy god Madhav Narayan along with the devotees are taken in and out of the town through this gate.

In the upper temple is the loom of the Nepali Princess Bhrikuti, spouse of the Tibetan king Songtsen Gampo.

A month-long worship to the God Madhav Narayan is done in Sankhu which is a Hindu festival based on the story of Swasthani.

Men & women spend 30 days at the temple fasting, worshipping and meditating the god Madhav Narayan.

Outside the temple, the riverbank of the Sali Nadi is thought to be the site where Goddess Parvati bathed during her month of meditations dedicated to Swasthani.

Then the royal sword is brought form the kind of Kathmandu on the fourth days and wood is burned to produce sacred ashes in the temple.

The statues of the goddess are brought to the town in special chariots, they are kept on different places on the basis of rotation within four gates of Sankhu and sacrifice is made on the next day.

Vairotsana, leaving Tibet after his teachings were slandered, stopped in Nepal and offered a golden icon to the monastery of Sankhu.