Lagosis a municipality at the mouth ofBensafrim Riverand along theAtlantic Ocean, in the Barlavento region of the Algarve, in southernPortugal. It is one of the most visited cities in the Algarve and Portugal, due to its variety of tourist-friendly beaches, rock formations (Ponta da Piedade), bars, restaurants and hotels, renowned for its vibrant summer nightlife and parties.Yet, Lagos is also a historic centre of the PortugueseAge of Discovery, frequent home ofHenry the Navigator, historical shipyard and, at one time, centre of the European slave trade.