The coast road into Cascais

An English estate predates the coast road by centuries

On the Avenida Marginal, the Tagus side of Cascais, the strongest story close by is the Quinta de Santo António, about a quarter mile from here. It is also known locally as Quinta Nova, or the Quinta dos Ingleses, "the English estate." Its own record traces it back to 1400, making it one of the oldest named properties on this stretch of coast, long before the road you're standing on existed.

Earthquakes repeatedly shook this stretch of coast

The ground along this coast shook more than once. An earthquake hit Lisbon in 1151, with 1,000 deaths recorded. Another followed in 1551, killing 2,000 people and destroying 200 houses. A smaller quake struck again in 1807, with 11 deaths. None of these matched the ruin of 1531, but together they mark this stretch of coast as one that has never stopped moving under its people.

A quake and tsunami killed thousands along this shore

Long before anyone paved the Avenida Marginal, the Tagus coast was struck by catastrophe. In 1531, an earthquake hit Lisbon and the surrounding coast, and the sea surged in behind it. Records put the death toll at 30,000 people, with 1,500 houses destroyed. A separate account of the same disaster calls it a tsunami, the water rising up the Tagus and tearing through the riverside towns. Cascais and the villages along this shore took the same shaking, the same wave.

A general was executed within sight of the water

In Oeiras, a few miles up this same shoreline, the Portuguese general Gomes Freire de Andrade was executed in 1817. Gomes Freire de Andrade had been accused of plotting against the military government that ruled Portugal after the Napoleonic wars, in the years when the royal family had fled to Brazil and generals ran the country in their place. His execution became one of the defining political killings of the period, a warning carried out in sight of the water.

Cascais was the deathplace of a king and an officer

Cascais itself holds two deaths worth knowing. In 1889, King Luís I of Portugal died there. Ninety years later, in 1979, the Portuguese army officer Miguel António do Carmo de Noronha de Paiva Couceiro also died in the town.

An exiled Bulgarian queen consort died nearby in Estoril

In Estoril, just along the coast, Giovanna of Savoy died in 2000. She had been queen consort of Bulgaria, and like many exiled European royals, she settled on this stretch of the Portuguese Riviera after her country fell to communism.

Giovanna of Savoy was the last queen consort of Bulgaria, married to Tsar Boris III. Giovanna of Savoy died there in 2000.

The road kept claiming lives in ordinary traffic accidents

The road itself has kept claiming people in the ordinary way roads do. In February 2020, a car skidded off the Avenida Marginal near Parede and fell onto Carcavelos beach below. Two young people inside were hurt, and maritime police and firefighters climbed down to pull them out. In July 2023, a man suffered a skull fracture after a motorcycle struck him on the same road, and traffic stopped for hours while he was treated. In April 2024, a head-on crash between Carcavelos and Parede closed the road in both directions for more than four hours, injuring two people. In September 2024, a 42-year-old man died when his car rolled over on the Avenida Marginal in the early hours of the morning, just before 3:13 a.m. In February 2025, a woman in her 30s was hurt in another collision on this stretch, heading toward Cascais.

A lighthouse built in the 1700s still guides ships in

The São Julião Lighthouse, about three quarters of a mile west, has guided ships into the mouth of the Tagus since the 1700s, when orders were first given to build it inside the walls of the Fort of São Julião da Barra. That fort, raised to defend Lisbon's harbor, later served as a prison, and the lighthouse itself was automated in 1980 and is run by remote control today. It still marks the Lisbon bar for ships coming in from the Atlantic, paired with the green light of the Bugio lighthouse across the river mouth.