Situated 150 kilometers from Mashahd, Khorshid Kalat Palace was built upon the order of Nader Shah Afshar in 1772 to serve as his living quarters and the place he stored his plunders of war. Located in the middle of a large garden, the 12 rooms of the Khorshid Kalat Palace are decorated with wall paintings and stucco reliefs. The most eye-catching feature of this octagonal-shaped palace, which incorporates elements of Indian and Mongolian architecture, is the tower on top of it. Part of this palace has been turned into a museum and houses the canon used during the Nader Shah campaigns.