Keneseth Eliyahoo Synagogue was built in 1884 by Jacob Elias Sassoon and his brother Albert (the Sassoon family also built the Sassoon Docks), in memory of their father Eliyahoo Sassoon. This soothing light blue colored building has a charming interior, resplendent with pillars, chandeliers, and stained glass windows. View it best in the afternoon when it's beautifully illuminated by sunlight. If you want to take photos inside, be prepared to pay 100 rupees.
Don't be surprised to find police outside the synagogue. Every synagogue in Mumbai now has 24-hour police security after the 2008 Mumbai terrorist attack, which included an attack on the Jewish Chabad House at Nariman Point.
Where: V B Gandhi Road, Kala Ghoda district (just around the corner from Rhythm House), Fort, Mumbai.