Castro Marim, Algarve, Portugal, October 2014. Castro Marim is a very old town, founded before the Roman Empire, that is surrounded by hand-harvested sea salt - 'salinas' - and a Natural Park protected by 1982's Ramsar Convention. Its castle belonged to the Templary organization until the 1356. A spectacular coastline of steep sandstone cliffs borders hidden sandy beaches on the south western tip of Europe, where the Mediterranean becomes the Atlantic Ocean.  Photo by Frits Meyst / MeystPhoto.com