Boca do Inferno
Top ways to experience Boca do Inferno
Detailed Reviews: Reviews order informed by descriptiveness of user-identified themes such as cleanliness, atmosphere, general tips and location information.
Popular mentions

4.0
4,137 reviews
Excellent
1,914
Very good
1,411
Average
631
Poor
141
Terrible
40

Carol
Cascais, Portugal4 contributions
Feb 2022
Boca do Inferno (the Mouth of Hell) is a mesmerizing place! This maritime attraction is located along the coast on the western edge of Cascais. Although still a fishing community, much of Cascais’ village charm has been replaced by hotels, restaurants, cafes, and fashionable shops. In the summer, the city is overcome with tourists from all over the world who are attracted to the weather, the beaches, the natural attractions, and the vibe.
The Mouth of Hell is what remains of an ancient cave that protrudes out towards the raw Atlantic Ocean in the form of an arch. When the ocean is calm, the strong waves move lazily through. But when the ocean is angry (or even just a little agitated), the tidal waves become oversized and crash up, into and through this space. You wouldn’t survive if you got caught up in it.

From the Cascais Marina, it is a mostly flat, easy walk which may take about 20-30 minutes. Along the walk there are spectacular ocean views. Hotels and homes line the opposite side of the road. There are also bicycle and pedestrian paths along this route. It’s also easily reachable by car with parking available at the site. You’ll also find a variety of small shops selling souvenirs, food, and gift items (most take cash only) as well as a couple of restaurants. There are public restrooms (marked WC) next to the parking lot.

Written April 18, 2022
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Teresa C
84 contributions
Oct 2022 • Couples
What a shocking sight when you first lay my eyes on this sea cave. My imagination took me to a inferno world. As the waves crashing into the cave, sun shaken broke through the clouds form a shimmering surface
Written October 21, 2022
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

neil_hun
Horsham, UK184 contributions
Feb 2020
Located about 1km from Cascais, it's an easy walk (there's a flat path that hugs the coastline all the way from the marina). Leading up to the Boca do Inferno, there are a series of cliff faces and rock formations being battered by waves, which give you a taste of what's to come.

The Boca do Inferno itself is one of those curious naturally formed rock formations that couldn't have been hand-sculpted any better. It's effectively a lagoon with almost vertical rock faces surrounding it, save for an archway (the boca/mouth) at one end. This acts as a funnel for huge waves to come crashing into the lagoon, which creates a swirl of white water. We were mesmerised for 15 minutes, waiting for the next big wave to come crashing in, while marvelling at the birds that would swoop through the archway and perch just out of reach from the incoming waves.

If you wanted to sum up the power of the ocean in one place, the Boca is a pretty good candidate.
Written February 22, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Md2012
Chisinau, Moldova294 contributions
Jun 2019 • Friends
It’s a dramatic section o coastline. 🌊The panorama it’s dramatically but at the same time it’s fantastically.
The cliffs are so beautiful because they plunge directly in the Ocean. From up top you can see the weaves coming in hard and continuously hitting the cliffs. Such phenomenon creates an unending sound reverberating all the way up to the edge of the cliff.
There are also cafes at the Boca where you can get a snack and have a sit outside.
It’s a must see !!!
Written April 7, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Alexandre P
Lisbon, Portugal48 contributions
Aug 2022
It is great to visit anytime, but if you manage to visit it at high tide and shaken waters, best. It is usual in winter. But even in summer may be impressive. The noise of the waves inside of the mouth is awesome. That is why I call it hell's throat and not hell's mouth..
Written September 2, 2022
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

bokx2
New York City, NY184 contributions
Nov 2021 • Friends
Got dropped off here by an Uber. Nice spot for pictures by the ocean. There are cafes, shops and restaurants around. The restaurant Mar do Inferno was highly recommended but we weren’t hungry enough. We opted to grab gelados at one of the cafes and walked down the coast towards downtown Cascais. Its a nice walk on a nice day.
Written November 9, 2021
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Richard_Milsom
Alexandria, VA123 contributions
Jan 2020
This is a very interesting geological formation and well worth a visit. Parking is ample, and after a short walk you will be treated to raging wave action moving through a small channel into a large open chasm. I enjoy seeing it every time I visit Portugal, and it is a great place to take visiting friends.
Written March 26, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

epbwh
Cambridge, MA14 contributions
Jul 2022
Make sure to get there at least 30 minutes before sunset to find a great nook or spot to relax and start takingg photos. It's really an incredible vista. Try also to visit when the tide is high and the waves are dynamic - sometimes in the morning the colors are really beautiful as well in the Boca itself.
Written August 4, 2022
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Agata W
Warsaw, Poland459 contributions
Apr 2022
Spectacular views and amazing location. A bit windy. Visited by a lots of people therefore quite crowded, despite pandemic. In the area possibility to dine, eat ice cream or buy some souvenirs on local market.
Written April 16, 2022
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

2RedSquirrels
Windsor, Canada348 contributions
Feb 2020 • Couples
This is an amazing formation and must be wonderful when the tide is high and the winds strong. Unfortunately when we visited all we saw were waves coming into to cove. Still an interesting spot with a good view of the cliffs rising out of the sea.
Written February 21, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC. Tripadvisor performs checks on reviews.

Showing results 1-10 of 1,178
Anything missing or inaccurate?
Suggest edits to improve what we show.
Improve this listing

Boca do Inferno (Cascais) - All You Need to Know BEFORE You Go

Frequently Asked Questions about Boca do Inferno

We recommend booking Boca do Inferno tours ahead of time to secure your spot. If you book with Tripadvisor, you can cancel up to 24 hours before your tour starts for a full refund. See all 136 Boca do Inferno tours on Tripadvisor