Shanirwada fort was the seat of Maratha empire during Peshwa rule. Foundation of this fort was laid around mid Eighteenth century by Bajirao I. He was a very popular general in the history of Maratha empire. His original name was Shrimant Bajirao Ballal Bhat and nicknamed Thorale. Bajirao I was fondly called Bajirao Thorale and Rau.
As it is said he fought 41 battles and lost none. Headquarter of Maratha empire was shifted from Satara to Pune in around 1720s. This was the time Bajirao I felt to construct a fort in Shaniwarwada.