Boca do Inferno


Atlantic waves pummel the craggy 'Mouth of Hell', 2km west of Cascais. It's about a 20-minute walk along the coast, or you can catch the BusCas (427) from Cascais station (€1, every 10 to 15 minutes). Expect a mouthful of small splashes unless a storm is raging.

Lonely Planet's must-see attractions

Nearby Cascais attractions

1. Casa das Histórias Paula Rego


This museum showcases the disturbing, highly evocative paintings of Portugal’s finest postwar artists. Biannually changing exhibits span Rego’s career,…

2. Museu do Mar Rei Dom Carlos

0.52 MILES

The small, brightly accented Museu do Mar spells out Cascais’ maritime history with costumes, tools, nets and boats, accompanied by quotes (in English)…

3. Museu Condes de Castro Guimarães

0.52 MILES

This whimsical early-19th-century mansion, complete with castle turrets and Arabic cloister, sits in the grounds of the Parque Marechal Carmona.

4. Parque Marechal Carmona

0.55 MILES

This wild park provides a shady retreat from the seaside crowds, with a duck pond, birch and pine trees, palms and eucalyptus, rose gardens and flowering…

6. Igreja de Nossa Senhora da Assunção

0.64 MILES

Weave through the back alleys west of the câmara municipal to the palm-fringed square that is home to the whitewashed Igreja de Nossa Senhora da Assunção,…

7. Palácio da Cidadela de Cascais

0.65 MILES

Commissioned as a summer palace in 1870 by King Dom Luís I, this captivating museum remains the official residence of visiting heads of state in Portugal…

8. Cidadela de Cascais

0.66 MILES

The citadel is where the royal family used to spend the summer. Today it houses a luxury hotel – the Pestana Cidadela Cascais – a courtyard restaurant,…