Gilbert Hill is a 200 ft (61 m) monolith column of black basalt rock at Andheri, in Mumbai, India. The rock has a sheer vertical face and was formed when molten lava was squeezed out of the Earth's clefts during the Mesozoic Era about 66 million years ago.
Source: WikipediaThe Sion Hillock Fort is a fort in Mumbai (Bombay), India. It was built under the regime of the English East India Company, between 1669 and 1677, atop a conical hillock when Gerard Aungier was the Governor of Bombay. It was notified in 1925 as a Grade I Heritage structure.
Source: WikipediaThe Mahim Fort is a fort in Mahim in Mumbai, Maharashtra state, India. Strategically located on the Mahim Bay, the fort overlooks Worli to the south, Bandra to the north, and Mahim to the east.
Source: WikipediaThe Sewri Fort is a fort in Mumbai built by the British at Sewri. Built in 1680, fort served as a watch tower, atop a quarried hill overlooking the Mumbai harbour.
Source: WikipediaThe Riwa Fort, locally known as Kala Qilla or Black Fort, is a fort in central Mumbai (Bombay), India on the banks of the Mithi River. The fort is currently in a dilapidated condition amidst the Dharavi slums.
Source: Wikipedia