Get your fix of vitamin D at Praia Matilde. After you've worked on your tan, stick around and watch the sky transform with colors with the setting sun.
You'll soon find out why this Arcade stretch of coastline is a hit with travelers. If you're looking for other things to see here, Castle of Soutomaior, Santuario de la Peregrina, and Praza de la Pelegrina are in this area as well. They won't take very long to get to from Praia Matilde.