Riwa Fort was incorporated as a part of the Bombay Castle or Casa Da Orta which was one of the earliest defensive structures in Bombay (Mumbai). The fortress marked the northern part of the Bombay Presidency during the 17th century. It was also utilized as an observation tower to watch out for attacks of enemies. This helped in guarding the region from Salsette Island which was under the Portuguese.
Presently, Riwa Fort is in a ruined and dilapidated state. Most of the structure is heavily encroached by the local slums.
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