About
Boca do Inferno, which translates roughly as "Mouth of Hell," is a clifftop attraction on the Atlantic coast near Sintra, in Portugal. It is a natural feature rather than a built site: a dramatic formation where the open ocean meets the rock.
Powerful Atlantic waves rush into narrow rocky chasms along the cliff edge. When the water is forced upward through the openings, it creates spectacular natural fountains of spray, and this is what draws most visitors. The effect is especially impressive when the sea is rough, so the visit can vary a great deal from one day to the next.
What to expect
- Breathtaking views of the coastline and the sea from the clifftop.
- A chance to watch the waves and spray at close quarters, from a safe distance at the edge.
- A short visit that suits a stop on a wider day out rather than a long stay.
Around the site
Boca do Inferno lies in the Sintra area, a region known for its hills, palaces and gardens, so it pairs naturally with other visits there. Because the location is exposed, it is worth dressing for wind and keeping a close eye on young children near the cliff edge.
If you enjoy wild coastlines and the power of the sea, this is a worthwhile stop. Allow time to simply stand and watch the water, since the fountains are the reason most people make the trip.