Adalaj Step-Well is situated 18 km. to the north of Ahmedabad in Gujarat India . The Vav (step-well) at Adalaj derives its name from the lady patron, Ruda, wife of the Vaghela chief, Virsinh; who built it in the 15th or 16th century A.D. The Vav, laid out in the north-south direction, the well in the north and in the south, have a total length of 75.3 metres. The three entrances meet in the first storey, underground, in a huge square platform, which has, to the top, an octagonal opening. The platform rests on 16 pillars, on the corners, and two in front of each side. The four corners of the platform are marked by four built-in shrines, with doors, windows, balconies. The stepped corridor begins from this square platform. It descends with four pavilion towers for five storeys. The walls of the Vav are veritable show cases of sculptures and ornamentation.