Rani-ki-Vav (the Queen’s Stepwell) - Top View Patan in Gujarat, India Photographer: Dushyant Patel (via 500px.com)
Rani-ki-Vav, on the banks of the Saraswati River, was initially built as a memorial to a king in the 11th century AD. Stepwells are a distinctive form of subterranean water resource and storage systems on the Indian subcontinent, and have been constructed since the 3rd millennium BC. It was added to the list of UNESCO’s World Heritage Sites on 22 June 2014. unesco.org