Pune is the ninth largest metropolis in India. Once the center of power of the Maratha Empire, it is situated 560 metres above sea level on the Deccan plateau at the confluence of the Mula and Mutha rivers. Pune is known to have existed as a town since 847 AD. Pune was originally called Punawadi. In 1730, Pune became an important political center as the seat of the Maratha Peshwa, the prime minister of the Bhonsle Chhatrapati of Satara. Pune is prominently associated with the struggle for Indian independence . In the period 1875 and 1910, the city was a major center of agitation and social reforms, led by Mahatma Jyotirao Phule, Gopal Krishna Gokhale, and Bal Gangadhar Tilak, as well as feminist Tarabai Shinde. Mahatma Gandhi was imprisoned at Yerwada Central Jail several times and placed under house arrest at the Aga Khan Palace in 1942–44, where both his wife and aide Mahadev Desai died. The cancellation depicts famous Aga Khan Palace.