Chand Baori — Wikipedia

Chand Baori is a stepwell situated in the village of Abhaneri in the Indian state of Rajasthan. It extends approximately 30 m (100 ft) into the ground, making it one of the deepest and largest stepwells in India. It is named after a local ruler of the Nikumbh dynasty called Raja Chanda, and its construction is dated to the 8th–9th centuries. It has 3500 steps cascading 13 stories deep into a massive tank at the bottom and has been constructed in an upside-down pyramid style.