King Prithvi Narayan Shah was involved in the construction of the four red-coloured towers around Lohan Chowk. The towers represent the four ancient cities of the valley: the Basantapur (Kathmandu) Tower, the Kirtipur Tower, the Bhaktapur Tower (Lakshmi Bilas) and the Patan (Lalitpur) Tower (known more evocatively as the Bilas Mandir, or House of Pleasure)
