Durgadi Fort - View from the gate on Flickr.
In the 17th century during the moghul reign, the city of Kalyan was surrounded by a fort wall. This city wall was guarded by 4 gates and 11 towers. Within the fort wall on a high mound near the Kalyan creek that is currently called Ganesh ghat, stood Durgadi Fort.
The original gate of the fort was near the north end, and was called the Delhi Darwaja. When the Marathas took over the fort in the 18th century, a new gate was built to the south of the fort for easy access from the Peshwa’s mansion.
This new arched gateway is from where the fort is currently accessible. As you enter the main gate, you can see the fort on a small hillock, covered with lots of green trees.