Place · Portugal
The history of Cascais
Assembled from 29 dug tiles · 380 sourced records · 4000 BC–now · last reviewed 6 October 2026
Cascais grew from Roman farm estates and a Visigothic burial ground into a chartered fishing town, then a royal summer court after the 1870s, and finally a refuge for exiled kings and secret couriers during the Second World War. Forts, chalets and a 1755 tsunami all left their mark on its shore.
These are the individual spots Strata has dug in Cascais — not a guide to the town, but a record of what happened on particular ground.
Digs in Cascais
The researcher who dug up forty forgotten rabbisAn American student's search for Portugal's erased Jewish scholars ends in a house built on this shore.
1364–2025 A seaside mansion built as a wedding gift
This point sits inside Casa de Santa Maria, a historic house museum on the Portuguese Riviera in Cascais. Casa de Santa Maria
2870 BC–2004 A 19th-century lighthouse, now a museum
This point sits at the Santa Marta Lighthouse, a working lighthouse and lighthouse museum on the old fort grounds south of Cascais. Santa Marta Lighthouse
2870 BC–2007 A 19th-century summer house, now a small hotel
You're standing near Chalet Ficalho, a Victorian-era villa built for Cascais's seaside nobility. Chalet Ficalho
2870 BC–2025 The kings who fled to a Portuguese fishing town
Grand dukes and deposed kings sat out a war in the hotels a quarter mile from where you are standing.
4000 BC–2016 A 19th-century summer villa, now a small hotel
You're standing beside the Chalet Ficalho, a seaside villa built for Portuguese nobles in the 1880s. Chalet Ficalho
3008 BC–2023 A 19th-century summer villa, now a hotel
You're a short walk from Chalet Ficalho, a seaside summer house built for Portuguese nobility in the 1880s. Chalet Ficalho
2870 BC–2023 Villas first, then a wall of forts
The oldest trace of settlement on this ground is a Roman house, half a mile from where you stand.
100 BC–1966 A castle built for show became a gift to strangers
A private fantasy on the cove ended up belonging to everyone who visits it. Forte de Nossa Senhora da Luz de Cascais
2870 BC–2000 Rebuilt for a king, disarmed within a year
A coastal battery near where you are standing was armed against Spain, rearmed for a civil war, then left to fall apart.
4000 BC–now A hole where the sea comes in to kill
A chasm carved by centuries of Atlantic swell, near where you are standing, has drawn painters, tourists, a faked death, and real ones. Vigia do Facho
2870 BC–1992 A seaside fortress, now a hotel
This point sits at the Citadel of Cascais, a fortified complex on the coast at Cascais that now holds a hotel and an art district. Citadel of Cascais
2870 BC–2014 A sea chasm on the Cascais coast
This point sits at a limestone ravine where the Atlantic pounds into a collapsed sea cave. Boca do Inferno
3008 BC–1987 Open ground on Portugal's Lisbon coast
You're standing on a quiet stretch of the parish of Alcabideche, just inland from Cascais. Alcabideche
100 BC–2025 A graveyard came before the villas
Long before Estoril's casinos, this stretch of coast was already a burial ground. Alcabideche
100 BC–2008 The walls that named this town
Parede takes its name from loose stone walls quarried on this ground for centuries. Colégio Marista de Carcavelos
1400–2013 The man who faked his own death in a sea cave
Half a mile from where you are standing, a chasm swallows the Atlantic, and once swallowed a man's reputation for dead.
2870 BC–now The cave where the dead were buried with shells
Nine hundred feet from where you stand, people buried their dead in a cave for two thousand years.
3008 BC–1967 A pocket of grand 1900s villas
This point sits near the [[Museum of the Sea, Cascais Chalet Ficalho
2870 BC–1992 Roman farmland above the coast
This point sits on the ridge above Cascais, close to a Roman farming estate and an Iron Age hilltop village. Sao Domingos de Rana
100 BC–now Where the kings had nowhere left to go
A regent, a king and his wife all died in exile within a short walk of where you stand. Three Polish Emissaries
1606–1999 The wave that drowned All Saints' Day
On November 1, 1755, the sea pulled back from Cascais and came back as a wall of water. Chalet Ficalho
3008 BC–2018 Open coastal ground near Cascais
This point sits on high ground outside Cascais, with no single building marking the spot.
100 BC–1992 A fishing village becomes a king's chosen court
You are standing in the heart of Cascais, the town King Luís I turned into Portugal's royal summer retreat. Chalet Monte Real
1520–2018 The invasion that never came
A quarter mile from where you stand, a fort built to stop the Spanish spent two centuries fighting nobody. Fort of Cresmina
100–now A hillside outside Cascais with nothing pinned to it yet
A patch of ground in Alcabideche that the record has not yet filled in. Alcabideche
500–1896 A regent, a king and a chess champion all died in exile here
Estoril's beachfront hotels sheltered Europe's dispossessed royalty and secret couriers through the Second World War, and some of them never left. Avenida Clotilde
1606–2016 The name that stayed small while the coast grew up around it
A settlement called Alcoitão was recorded here long before the highways came, and its name still sits quietly a few streets from where you stand. Alcabideche
1873–2020 The fire that left no record
A point on the map above Cascais holds no fire, no ruin, no name — only the rock and the coast around it. Alcabideche
1896
Cascais in layers
Neolithic to Chalcolithic period
Prehistoric people carved four underground tombs from marlstone at Alapraia and laid their dead there with offerings for the cult of the dead. Cascais Municipal Council - History
4th-3rd millennium BC, used into Late Antiquity
Neolithic and Chalcolithic people, and later Roman-era inhabitants, buried their dead in caves at Poço Velho from the fourth millennium BC onward. Travel Tomorrow / Cascais Town Museum collections
3008–2630 BC
A companion radiocarbon sample from the same group spans roughly 3008 to 2630 BC. Cross-referenced p3k14c (OpenContext)
3008–2475 BC
Radiocarbon samples from a site about 1.3 kilometers from the chasm date human presence here to between 3008 and 2475 BC, the oldest dated trace in the area. OpenContext / p3k14c
within 500 m, Lisbon C14 Geo Group
Another sample from the same site near the reader dates to between 3008 and 2630 BC, corroborating the earlier Chalcolithic presence here. Cross-referenced p3k14c
3000 BC–2000 BC
A Neo-Chalcolithic settlement (roughly 3rd millennium BC) is recorded half a kilometer from here at Casal Ventoso. Endovélico — Direção-Geral do Património Cultural
2870-2475 BC
Radiocarbon samples pulled from ground about 900 meters away date to between 3008 and 2475 BC, evidence people were working this coastline long before Cascais existed. Cross-referenced p3k14c (OpenContext)
2870 BC to 2475 BC
Carbon samples from a site just over a kilometer away date human activity here to between roughly 3000 and 2475 BC, the oldest dated trace of people on this ground. OpenContext / p3k14c radiocarbon dataset
2870 BC to 2475 BC
Two radiocarbon samples taken about a kilometer from here have been dated to between roughly 3000 and 2475 BC, evidence of people on this ground in the late Neolithic. Cross-referenced p3k14c (OxCal database)
2870–2475 BC
Radiocarbon samples from a site less than a kilometer away date human activity to between 2870 and 2475 BC, the oldest dated trace of people on this ground. Cross-referenced p3k14c (OpenContext)
2870–2475 BC
Radiocarbon samples from a dig about 745 meters off date human occupation here to between roughly 3000 and 2475 BC. OpenContext / p3k14c radiocarbon dataset
2870-2475 BC
Radiocarbon-dated human remains from a site about a kilometer away have been dated to between 2870 and 2475 BC, among the oldest traces of people in this ground. OpenContext - Cross-referenced p3k14c
2870-2475 BC
Radiocarbon samples recovered near Lisbon's Cascais district were dated to between roughly 3000 and 2475 BC, the oldest dated human trace in this dig. Open Context / p3k14c
2870–2475 BC
Radiocarbon samples found less than a kilometer away date human activity here to between 2870 and 2475 BC, long before Cascais had a name. Open Context / p3k14c radiocarbon database
circa 2870–2475 BC
Radiocarbon samples from a site 600 meters off date human presence to between roughly 3000 and 2500 BC, among the oldest traces found near this ground. Cross-referenced p3k14c (OpenContext)
2870 BC to 2475 BC
Radiocarbon samples taken about 625 meters from here have been dated to between roughly 3000 and 2475 BC, the oldest trace of people on this ground. Cross-referenced p3k14c (OpenContext)
within 500 m, Lisbon C14 Geo Group
Radiocarbon samples taken within 500 meters of this spot date to between 2870 and 2475 BC, among the oldest direct evidence of people on this ground. Cross-referenced p3k14c
Stone Age to Iron Age
The Caves of Poço Velho, about 740 meters away, were used as a necropolis from the Paleolithic era through the Bronze and Iron Ages. Wikipedia, Caves of Poço Velho
Stone Age to Iron Age
The Caves of Poço Velho, a little over a kilometer away, were used as a burial ground stretching back to the Paleolithic era. OpenStreetMap / Wikipedia
Roman period
The Roman ruins of Casais Velhos, occupied from around 100 BC into the 5th century AD, lie about 1.5 km from where you stand. Wikipedia / Wikidata
Roman period
The Roman villa of Vilares, dated to the same 100 BC-410 AD span, sits about 2.3 km from this spot. Wikipedia / Wikidata
Roman period
A further Roman villa site, Alto da Cidreira, dates from the same era and lies roughly 3.3 km away. Wikipedia / Wikidata
circa 100 BC – 410 AD
The Villa Romana de Miroiço, a Roman farm estate occupied roughly from 100 BC to 410 AD, sits protected as cultural heritage a little over a kilometer from this spot. Wikidata
circa 100 BC – 410 AD
The Roman villa of Alto da Cidreira, another farm estate from the same Roman period, stands about 3.6 kilometers away. Wikipedia / Wikidata
Questions about Cascais
What is Cascais known for historically?
Cascais is known as the fishing town that King Luís I of Portugal turned into the royal family's summer residence from the 1870s until his death there in 1889, drawing nobility who built seaside villas such as Chalet Ficalho and Chalet Monte Real, and later as a wartime refuge for Europe's exiled royals.
What happened at Cascais during the Second World War?
Cascais and neighbouring Estoril sheltered deposed and exiled European royalty, including Carol II of Romania, Miklós Horthy, Grand Duchess Charlotte of Luxembourg, Umberto II of Italy and the Duke and Duchess of Windsor, alongside Polish couriers such as Jan Karski moving secretly between occupied Europe and London.
What happened at Cascais in 1755?
On 1 November 1755, a tsunami triggered by the Lisbon earthquake struck Cascais after the sea withdrew and returned as a wall of water, killing more than 300 people, damaging the Citadel of Cascais and flattening much of the town around it.
What older history lies beneath Cascais and Alcabideche?
The ground around Cascais holds Roman farm estates and villas, Latin funerary inscriptions, a Visigothic-era necropolis at Alcoitão, and a Chalcolithic burial cave where around 115 people were laid to rest between the fourth and third millennia BC with scallop shells and carved stone idols.
What is the Boca do Inferno chasm known for?
Boca do Inferno, a sea chasm near Cascais formed by a collapsed sea cave, is known as the site where occultist Aleister Crowley staged his own disappearance in October 1930 before resurfacing in Berlin, as well as for genuine deaths and one of the earliest films ever shot there in 1896.
What historic buildings can still be seen in Cascais today?
Surviving buildings include the Citadel of Cascais, begun in 1488 and now a hotel; the Torre de São Sebastião, built in 1900 and a museum since 1931; Casa de Santa Maria, a 1902 wedding-gift mansion turned museum in 2007; and Santa Marta Lighthouse, lit since 1868.