Unlike other tombs of the Lodi period, which are based upon a square plan, the Tomb of Sikandar Lodi (1489-1517) is a revival of the earlier Sayyid type, with its octagonal plan, deep veranda and tall arches. The tomb stands at the center of an enclosed precinct entered from a monumental portal facing south. It is topped with a double dome without the more typical roof kiosks (chhatris).
Source:
Tillotson, G.H.R. 1990. Mughal India. San Francisco: Chronicle Books, 46, 48, 138.
Nath, R. 1978. History of Sultanate Architecture. New Delhi, Abhinav Publications, 86-87.
Williams, John A. and Caroline. 1980. Architecture of Muslim India. Set 3: The Sayyids and the Lodis, 1414-1526. Santa Barbara, California, Visual Education Inc.