by Portugal Getaways Team
Updated October 2026 • 5 min read
The Algarve's best-known sea caves are on the stretch of coast between Lagos and Albufeira. Benagil, with its round opening in the roof, is the most famous, followed by the caves around Praia da Marinha and the arches and grottoes of Ponta da Piedade in Lagos. The sea caves can only be visited from the water on a guided boat, kayak or paddleboard tour, and landing on the beach inside Benagil is not allowed. Tours leave from Lagos, Portimão, Carvoeiro and Albufeira, and May to September has the calmest seas.
This guide covers the main caves, the ways to visit them, where tours depart from and the rules to know before you book.
The Algarve Caves at a Glance
| Cave or site | Where | How to see it |
|---|---|---|
| Benagil Cave | Benagil, between Carvoeiro and Albufeira | Guided boat, kayak or SUP tour; from above on the cliff path |
| Praia da Marinha caves | Next to Benagil, Lagoa | Boat tours from the central Algarve; beach and cliff path |
| Ponta da Piedade | Lagos | Boat or kayak from Lagos Marina; boardwalks on the cliffs |
| Algar Seco | Carvoeiro | On foot from the village; boats pass by |
1. Benagil Cave
Benagil is a large sea cave with a small beach inside and a round opening in the roof that lets in a beam of light.
The cave is reached from the water only. Current rules prohibit landing on the beach inside the cave for everyone, including tour operators, and kayaks and paddleboards can only enter as part of an official guided tour. Swimming into the cave from Benagil beach or nearby beaches is also banned. Rules and enforcement can change from season to season, so confirm the details with your operator.
For departure points, parking and the best time of day, see our full guide to Benagil Cave.
BENAGIL CAVE BOAT TOUR FROM PORTIMÃO
A 2-hour boat trip from Portimão along the coast to the Benagil caves, on boats suited to entering the caves.
See the Benagil tour →Benagil Cave
2. Praia da Marinha and the Seven Hanging Valleys
Praia da Marinha, a short distance west of Benagil, is a beach framed by golden cliffs, sea stacks and small caves. Most Benagil boat tours pass along this stretch, and from land you can walk down to the beach or follow the cliff trail known as the Seven Hanging Valleys, which links Praia da Marinha with Benagil and gives views of the cave from above.
BENAGIL AND MARINHA ON FOOT
A 5-hour guided walk to Algar Seco, Benagil and Praia da Marinha along the Seven Hanging Valleys trail, with views of Benagil Cave from the clifftop.
See the walking tour →3. Ponta da Piedade, Lagos
Ponta da Piedade, south of Lagos, is a headland of limestone arches, sea stacks and grottoes. Small boats and kayaks leave from Lagos Marina and weave through the rock formations, and boardwalks and staircases on the cliffs give views from above. It is the best cave trip if you are staying in the western Algarve.
⛵ PONTA DA PIEDADE CAVES BY BOAT
A guided boat trip from Lagos Marina around the caves and grottoes of Ponta da Piedade.
See the boat tour →More ways to see Ponta da Piedade
4. Algar Seco, Carvoeiro
Algar Seco is a group of rock formations, arches and blowholes on the cliffs next to Carvoeiro. It is not a sea cave, but a boardwalk from the village leads to arches and openings in the rock with views over the sea, and you can visit it on foot at any time. Many boat tours from Carvoeiro and Portimão pass by on the way to Benagil.
Boat, Kayak, SUP or On Foot?
| Option | Good for | Keep in mind |
|---|---|---|
| Boat tour | Seeing several caves in one trip, families, first-time visitors | Large boats may not enter the smaller caves |
| Kayak tour | Getting close to the cliffs and into smaller caves | Needs some fitness; cancelled in rough seas |
| SUP tour | Experienced paddlers | Only with a guide; most affected by wind and swell |
| On foot | Views from above, free, any time of year | You cannot enter the sea caves from land |
Kayak and boat tours
Where Do Cave Tours Depart From?
Pick the departure point closest to your hotel:
- Lagos: Ponta da Piedade by boat or kayak, and longer boat trips east to Benagil.
- Portimão: boat tours to Benagil and the caves around Praia da Marinha.
- Carvoeiro and Benagil: the shortest trips to Benagil, including kayak and SUP tours.
- Albufeira: boat tours from Albufeira Marina along the coast to Carvoeiro, often with dolphin watching.
Tips for Visiting the Algarve Caves
- Season: May to September usually has the calmest seas. In winter, tours can be cancelled at short notice.
- Time of day: early morning and late afternoon are quieter. Light through Benagil's roof opening is strongest around midday.
- Booking: reserve summer tours in advance, since the popular departures sell out.
- What to bring: sun protection, water and a waterproof bag for your phone or camera.
- Choose a licensed operator: only official guided tours can take kayaks and paddleboards into Benagil.
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Book now →Frequently Asked Questions
What are the most famous caves in the Algarve?
Benagil Cave is the most famous, followed by the caves around Praia da Marinha and the grottoes of Ponta da Piedade in Lagos. Algar Seco in Carvoeiro is a popular rock formation you can visit on foot.
Can you walk into Benagil Cave?
No. The cave can only be reached from the water on a guided boat, kayak or paddleboard tour, and landing on the beach inside is prohibited. You can see it from above on the cliff path.
What is the best way to see the Algarve caves?
A boat tour is the easiest way to see several caves in one trip. A guided kayak tour gets you closer and into smaller caves, if the sea is calm.
Where do Benagil boat tours leave from?
Tours depart from Benagil, Carvoeiro, Portimão, Albufeira and Lagos. The closer the departure point, the shorter the trip.
When is the best time to visit the Algarve caves?
May to September usually has the calmest seas. Go early in the morning or late in the afternoon to avoid the busiest departures.
Can you visit the caves near Lagos?
Yes. Ponta da Piedade, just south of Lagos, has arches and grottoes you can explore by boat or kayak from Lagos Marina, or see from the clifftop boardwalks.
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