The three baolis in Mehrauli are located in the South West district of Delhi. Two of the baolis, Gandhak ki Baoli and Rajon ki Baoli, lie in the Archaeological Park maintained by the Archaeological Survey of India near Qutab Minar. Gandhak ki Baoli is at one extremity of the Archaeological Park. Rajon ki Baoli is away from this baoli. Anangtal Baoli is in a forest 100 meters west of the Yogmaya Mandir, behind a neighborhood and outside of the Archaeological Park complex.
The Anangtal Baoli, the oldest baoli in Delhi, is a single stage step well. Excavations at this site reveal that the well was probably very large; some steps leading to the water are extant. It used the technique of rainwater harvesting for its storage. The baoli is located in a forest behind a neighborhood and is used as a local waste dump and pig farm, with sewage running into it. While it was supposed to be maintained by the Delhi Development Authority, the Delhi High Court ordered that the Yogmaya Mandir Welfare and Management Society take over, since the DDA was failing in its duties. As of 8 December, 2018, the baoli is not maintained and does not have any markers signifying its historical relevance.
Gandhak ki Baoli
The Gandhak ki Baoli is a much larger step well than the Anangtal Baoli. It has decorative architectural features. As the name Gandhak implies, the water in the step well has sulphur content and hence smells of sulphur fumes, and the water is said to have curative quality. It has a simple plan with five stages or floors at each stage, in taper down fashion, with steps leading to the water surface at the lowest level. The stairway here is about long and wide. On each floor there are ornate pillared passages. Over the centuries the step well got silted up and recently ASI imitated action to do desilting. the desilting operations carried out by ASI in 2004–05 has resulted in recuperation of the water in the well to a depth of.
Rajon ki Baoli
The Rajon ki Baoli, rectangular in plan, is the largest and most ornamented of all the three baolis in Mehrauli. It has a series of steps forming four stages, each in descending size, with floors at each stage, leading to the water level from the surrounding ground level. Its appearance is like a courtyard of the medieval period with passages marked by stylized carved symmetrical arches spanning the columns in North Indian architectural style, which form the three sides of the baoli. There are rooms at each floor which once provided a cool resting place for people. With its incised plaster work, the baoli is an elegant architectural edifice. When built the water used to reach up to the third stage. Over the centuries the well got silted up. It has since been desilted. The Archaeological Survey of India has carried out desilting operations of the well which was silted to a depth of, during 2004–05. As a result, the water level has risen by 20 ft and 60 steps in the well lead to the surface of water.