# A Sunday in Cascais from Lisbon: Cidadela, Boca do Inferno and a Stroll to Estoril

Cascais is 40 minutes by train from Lisbon. The Cidadela and the bay, the Boca do Inferno, fish above the cliff and the seaside promenade to Estoril.

Fuente: https://www.geocalia.com/en/portugal/lisbon-region/cascais/itineraries/boca-do-inferno-and-estoril · Revisado: 2026-11-12

## El día
- 09:30 · Salida: 45 min by train (Cascais line train from Cais do Sodré; sit on the left)
- 10:15 · The Cidadela, the marina and the centre of Cascais (bay, Cidadela and marina · 1 h 30 · free)
  - 30 min on foot
- 11:45 · Boca do Inferno (along the coast and the Santa Marta lighthouse · free)
  - 2 min on foot
- 13:00 · Mar do Inferno (next to the viewpoint · open on Sunday; closed on Wednesday) · Mar do Inferno, €€€
  - 15 min on foot
- 15:30 · Seafront promenade from Cascais to Estoril (3 flat km beside the sea)
  - 30 min on foot
- 17:00 · Santini Cascais Baía (ice cream before heading back, or on arriving in Estoril) · Santini Cascais Baía, €
- 17:30 · Vuelta: 30 min by train (train from Estoril or Monte Estoril; you reach Cais do Sodré around 18:15)

A day trip from Lisbon without a car: Cascais is the end of a train line that leaves from the city centre and runs along the Tagus and then the Atlantic. In 40 minutes you are at the bay. This plan visits the Cidadela, follows the coast on foot to the Boca do Inferno, has fish on the clifftop and returns along the seafront promenade to Estoril, where you catch the train back without retracing your steps.

## The day, hour by hour

9:30 · Train at Cais do Sodré. The Cascais line runs frequently. Sit on the left: you pass Belém, the tower and the beaches of Carcavelos and Estoril.

10:15 · The bay and the Cidadela. From the station walk down to Ribeira beach, the one with the fishing boats, and go into the Cidadela, the fortress that guarded the mouth of the Tagus: its courtyards are open and there are artists' workshops. Continue along the marina.

11:45 · Boca do Inferno. Through the park and past the Santa Marta lighthouse, about 25 minutes on foot along the coast. It is a sunken cave where the sea breaks; in a swell, the water rises in foam through the arch. Do not go past the railings.

13:00 · Lunch at Mar do Inferno. A few steps from the viewpoint, a family-run grilled fish and seafood restaurant with a terrace over the sea. On Sunday it opens at midday and in the evening; on Wednesday it is closed. Book by phone in summer.

15:30 · Seaside promenade to Estoril. Head back towards the centre and follow the promenade beside the beaches of Conceição, Tamariz and Poça: three flat kilometres with the sea beside you. From Tamariz you can see the Casino Estoril above its gardens.

17:00 · Ice cream. Santini, the ice-cream shop dating from 1949, is next to Cascais station; if you are already in Estoril, save it for another time.

17:30 · Heading back. Take the train at Estoril or Monte Estoril. You reach Cais do Sodré around 18:15.

## If it rains

The Casa das Histórias Paula Rego, five minutes from the Cidadela, is open Tuesday to Sunday from 10:00 to 18:00 and costs €5; under-18s do not pay.

## With children

Everything is flat beside the sea. The walk to Estoril suits a pushchair; the centre has cobbles. The Boca do Inferno is a big hit, always holding hands.

## Cómo llegar

### Without a car
Cascais line train from Cais do Sodré, about 40 minutes. From the airport, metro to Cais do Sodré.

### By car
About 30 km along the A5, with a toll, or along the coastal Marginal. Parking in Cascais is expensive and in summer difficult: leave the car at the edge of town.

## Consejos

### Come back from Estoril
The promenade is best done in one direction only.

### Look at the sea before you set out
On a day of swell, the Boca do Inferno is worth the detour.

## Preguntas frecuentes

### How long does the train from Lisbon to Cascais take?
Around 40 minutes from Cais do Sodré.

### Is Mar do Inferno open on Sundays?
Yes, from 12:30 to 22:30. It is closed on Wednesdays.

### Can it be done with small children?
Yes. About 7 km spread across the day, all flat.

### What if it rains?
Swap the walk for the Casa das Histórias Paula Rego, under cover.