Right next to Benagil Beach lies one of the Algarve’s most iconic natural landmarks: the Benagil Sea Cave. Known locally as Algar de Benagil, this astonishing rock formation has become one of the most photographed and visited places in southern Portugal.

Over thousands of years, the Atlantic has slowly carved out the rock, hollowing it into the vast space you see today. What really sets it apart is the large circular opening in the ceiling — often called the “eye” of the cave.

Despite its popularity, the cave itself is not directly accessible by foot from above. Although many visitors walk along the cliffs to view the opening from above, there is no safe path down into the cave. The only way to reach the beach inside is by water. Most visitors arrive by kayak, stand-up paddleboard, small-boat tour, or, occasionally, by swimming from nearby Benagil Beach when the sea is calm.

Kayaking has become one of the most popular ways to experience the cave. Paddling along the coast allows visitors to explore several nearby grottos and arches before reaching Benagil itself. Entering the cave by water offers a completely different perspective than seeing it from above.

Today, Benagil has become one of the symbols of the Algarve’s natural beauty and a must-see destination for visitors exploring the region.