Sight
Boca do Inferno
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Boca do Inferno, meaning 'Mouth of Hell,' is a striking coastal formation near Cascais. Visitors gather on the clifftop viewing platform to watch Atlantic waves funnel through a natural arch, often exploding into towering plumes of spray. The site is especially dramatic during high tide or stormy weather. A short walking path leads from the town center, and nearby cafes offer spots to sit and admire the relentless power of the sea.
Don't miss
- Watch waves crash through the natural arch and erupt into mist
- Photograph the rugged cliffs and ocean views at sunset
- Walk the coastal path linking Cascais to Boca do Inferno
Tickets & tours
Ways to visit Boca do Inferno
You can usually visit on your own. A tour is worth it for transport, a guide, or combining nearby sights into one day.
Cheapest way inAlfama and Mouraria Tour - The oldest neighbourhoods in Lisbon4.9★ · 524 travelers~3 hoursFree cancellationFrom$1 per personSee dates →
Best full daySintra to Cascais: 2 Palaces, 4 Sites, Small Group 10 Hour Tour4.9★ · 3,532 travelers~10 hoursFree cancellationFrom$116 per personSee dates →
Private & flexiblePrivate day trip Sintra Cascais Estoril coast from Lisbon5★ · 24 travelers7–8 hoursFree cancellationFrom$193 per personSee dates →More attractions in Cascais