A hammam is "a bath with hot, cold, and warm chambers [that is] modeled on ancient Roman baths; today these are often called Turkish baths."1
The hammam at Humayun's Garden Tomb is embedded in the garden's northern wall, in line with Humayun's Tomb and the northern fountain. The hammam is connected to a giant well that supplies water through the hammam, down the large chadar, and out to many of the water channels that divide and define Humayun's Garden Tomb.
1. Catherine B. Asher, Architecture of Mughal India (Cambridge: Cambridge University Press, 1992), xxv.