Benagil is well known for its cave, which you can only visit from sea. Small boats leave from Benagil beach, which you can book on the spot, but there are many tour operators offering a trip here. If you want something more adventurous, then enter the cave by kayak or SUP board.
Benagil is in the Algarve, and is a small fishing village, well known for its main attraction, the Benagil Cave. Benagil itself does not have much to offer, but the spectacular caves and the beach make it a popular location for the tourists.