Fort Aguada is a well-preserved seventeenth century fort built by Portuguese along with a lighthouse, standing and overlooking the Arabian Sea. It is an ASI protected Monument of National Importance in Goa. The fort was constructed in 1612 to guard against the foreign invaders. It was a reference point for the vessels coming from Europe at that time. This old Portuguese fort stands on the beach south of Candolim, at the shore of the Mandovi River. A freshwater spring within the fort provided water supply to the ships that used to stop by. This is how the fort got its name , 'Aguada', meaning watery in the Portuguese language. Crews of passing ships would often visit to replenish their freshwater stores.