Dharavi / Mahim area, Mumbai
A little-known fort ruin near the Dharavi-Mahim area, believed to date from the era when Bombay's seven islands were still separated by tidal creeks and guarded by a chain of small coastal forts. Very little of the original structure survives, and even its precise history is thinly documented compared to Mumbai's better-known forts. It remains a low-profile site visited mainly by heritage enthusiasts tracing the city's original island fortifications. There is no ticketed entry or formal visitor infrastructure.