Situated 18 kms from Panaji and situated on a headland of the river Mandovi, this fort was built by the Portuguese in 1609-1612, to command entry into the river in order protect Old Goa from potential enemy attacks. A spring within the fort provided water supply to the ships that called there, giving it the name “Aguada” (meaning ‘water’ in Portuguese). The fort, at present, houses the Central Jail. A 19th century lighthouse is situated inside the fortress.