Chand Baori
Chand Baori is a famous stepwell situated in the village of Abhaneri near Jaipur in the Indian state of Rajasthan.This step well is located opposite Harshat Mata Temple and is one of the deepest and largest stepwells in India. It was built in the 9th century and has 3500 narrow steps and 13 stories and is 100 feet deep.
(Thanks, Christian)