Rani ki vav (lit. 'Queen’s stepwell') is a stepwell situated in the town of Patan in the Indian state of Gujarat. It is located on the banks of the Saraswati river. Its construction is attributed to Udayamati, daughter of Khengara of Saurashtra, queen, and spouse of the 11th-century Chaulukya king Bhima I. Silted over, it was rediscovered in the 1940s and restored in the 1980s by the Archaeological Survey of India. It has been listed as one of the UNESCO's (United Nations Educational, Scientific and Cultural Organization) World Heritage Sites since 2014.

Rani ki vav is considered as the finest and one of the best examples of stepwell architecture in Gujarat and in India. It was built at the height of craftsmens’ ability in stepwell construction and the Maru-Gurjara architecture style, reflecting mastery of this complex technique and beauty of detail and proportions. The architecture and sculptures are similar to the Vimalavasahi temple on Mount Abu and Sun temple at Modhera.

It is designed as an inverted temple highlighting the sanctity of water and is divided into seven levels of stairs with sculptural panels; more than 500 principal sculptures of Bhagwan Vishnu (Hindu god) and over 1000 minor ones combine religious and legendary imagery.

More Info: en.wikipedia.org