The Ria Formosa lagoon, located in the Algarve, in southern Portugal, is a system of barrier islands that connects to the sea through six inlets. Five of these inlets are natural and have mobility characteristics. The sixth is an artificial inlet that was opened with the purpose of allowing easier access to the port of Faro. In 2010, the lagoon was recognised as one of the country’s seven natural wonders. Following a public vote in which 656,356 voted, the Ria Formosa was announced the winner of the Marine Area category of the ‘7 Maravilhas Naturais de Portugal’.
Presently the main inlet of the system is the Faro-Olhão inlet, which is an artificial construction. The process started in 1927 but it was only in 1952 that the engineering works were completed and it assumed the present configuration.
Wikipedia https://en.wikipedia.org/wiki/Ria_Formosa
Address 8700, Portugal
Coordinates 37°2'29.636" N -7°50'10.315" E