Adalaj is a village 18 km to the north of Ahmedabad. The vav (step-well) here Adalaj derives its name from the lady patron, Ruda, wife of the Vaghela chief Virsinh, who built it in the 15th or 16th century AD. The Vav has three entrance stairs leading to a stepped corridor. These three entrances meet in the first storey, underground, in a huge square platform. The platform rests on 16 pillars, each of its four corners has built-in shrines with doors, windows and balconies.