Patan is rich in its architecture. Sahastralinga lake, step-well of Queen (Rani-ni-vav) and Rudra Mahalaya temple of Siddhapur are worth seeing architecture’s of Patan. The ruins of Rudra Mahalaya temple in Siddhpur depicts the grandeur of Siddhpur which is located 26 km away from Patan. Rani-ki-vav was built by Udaymati, the queen of Bhimdev-I so that people of the kingdom can get clean drinking water. UNESCO declared Rani-ki-vav as a world heritage monument in 2014. This vav is a proof of innovative and excellent water harvesting system that existed in ancient Gujarat. Siddhraj Jayasingh built Shahastraling lake in 1140 AD.