History has it that during the time of the Malla rule in Kathmandu, the king of the Sen dynasty, Palpa Manimukunda Sen (1575-1610 BS), divided his property among his sons, the youngest of whom, Lohang Sen, was given the magnificent Makwanpur Gadhi and began his rule here as an independent state. It is believed that this spectacular fort was built in Chisapani during his reign for security purposes, as the place was only a gateway for the Tarai- Kathmandu route, but there is no solid evidence of this.