The story under this coastline

The researcher who dug up forty forgotten rabbis

An American student's search for Portugal's erased Jewish scholars ends in a house built on this shore.
Last reviewed 24 September 2026 · A three-minute read · 1364–2025
The short answer

Cascais is home to the Avner Cohen Casa Chabad, opened in 2020 on land the municipality granted after an American researcher, Eli Rosenfeld, spent over a decade recovering the names of around forty forgotten Portuguese rabbis erased by the Inquisition, and settled in Cascais to build the country's first permanent Jewish community centre.

2006 to 2018

An American student recovered forty forgotten Portuguese rabbis

In 2006 an American student named Eli Rosenfeld arrived in Portugal. He came to research Judaism in the country during the 15th century. Portugal's Inquisition started in 1536. It forced Jews to convert or leave. Many rabbis vanished from the record entirely.

Rosenfeld looked for their names. He found around 40 rabbis who had lived and taught in Portugal before and during the Inquisition. History had mostly forgotten them. In 2018 he published what he found in a book called Vozes Judaicas de Portugal, "Jewish Voices from Portugal." Portugal's president and the mayor of Cascais both wrote parts of it.

Forty rabbis, erased by the Inquisition, came back into print in 2018.
2010 to 2020

A rabbi's name went over a doorway in Cascais

In 2010, Rosenfeld became Portugal's shaliach. This is the Chabad-Lubavitch emissary to the whole country. The role meant building a Jewish community center from nothing. Portugal had none. He settled in Cascais, where a sizable Jewish community already lived nearby.

Rosenfeld asked the mayor of Cascais for land. In 2016 the municipality agreed. They offered a plot in the Costa da Guia for almost no rent. The land had come to the city through a swap with the Catholic Church. Some residents wanted it kept as a park instead. Over a hundred people protested the plan in September 2017. They protested again in February 2018.

The building went ahead anyway. It opened in 2020. It sits less than a kilometer from where you stand. Its main hall is dedicated to Rabbi Isaac Aboab of Castile. He was a Jewish scholar who died in Porto. Five centuries after the Inquisition drove Portugal's rabbis into silence, one of their names sits over a doorway on this coast.

1 November 1755

An earthquake and tsunami followed the court to Cascais

The royal court had planned a holiday at the coast, nothing more. King Joseph I's daughter wanted a day by the sea, so the household moved to Cascais. On the morning they arrived, an earthquake tore through Lisbon. The court, sheltering here rather than in the capital, survived the first shock. Then a tsunami came in off the bay and wrecked boats along the shore where they stood. Parish records afterward counted the dead at nearly a third of the town's people, one of the highest death tolls anywhere in the country. The people who ran from Lisbon found the disaster had followed them to Cascais anyway.

1861 to 1889

A king came to Cascais to die

Luís I of Portugal ruled from Lisbon for twenty-eight years. He did not die there. He died in Cascais in 1889, at the end of a reign that had watched the monarchy lose ground to republicans and to debt. The town had taken in a fleeing royal court on a bad day in 1755. It was still the place a king came to when his own story closed.

A tower built to keep this coast sealed off would one day watch the opposite happen.
1488 to 1870s

Forts along this shore were built to keep people out

Long before any of that, this stretch of shore was built to keep people out. King John II ordered the Torre de Santo António de Cascais raised in 1488 to guard the mouth of the Tagus River. More forts followed over the next two centuries. They ringed the bay with garrisons. These troops meant to stop ships, soldiers, and anyone else the crown did not want landing here. Troops held the line at Cascais on and off for nearly four hundred years, into the 1870s. The coastline's whole purpose, for most of its history, was refusal.

A shore fortified for centuries to keep people out later had to be argued over to let a synagogue in.
2016 to 2020

Disputed land became a Jewish community house

The land the municipality offered for the Chabad house had its own tangled past. Cascais had picked it up in a swap with the Catholic Church. Some residents wanted it kept as open parkland. They did not want it handed to a new religious building. More than a hundred people turned out to object in September 2017, and again in February 2018. The objections did not stop it. The Avner Cohen Casa Chabad opened in 2020, on ground that had been fought over twice before anyone broke soil.

The tower still faces the water, and less than a kilometer inland, a doorway now carries the name of a rabbi the Inquisition never managed to erase.

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Where this is

38.708°N 9.443°W TILE ≈ 1.2 × 0.6 KM
Town
Cascais
Country
Portugal
Tile
≈1.2 × 0.6 km (geohash6)
Last reviewed
24 September 2026

The layers, in order

Sourced records, high and medium confidence. Era background is marked as such.
Prehistoric
Mesolithic period
Portugal's national archaeological survey records a Mesolithic open-air occupation site at Quinta da Bicuda, a short walk from here.
Neo-Chalcolithic period
A settlement dated to the Neo-Chalcolithic period has been recorded at Casal Ventoso, within a mile of this spot.
Ancient
Roman period
An industrial complex dating to the Roman period has been recorded at Bom Sucesso, a little over a mile away.
Gravettian through medieval periods
The Roman Villa of Alto do Cidreira, about a mile and a half from here, shows occupation stretching from the Gravettian through the Iron Age, Roman period, and into the Middle Ages.
Medieval
Islamic medieval period
A medieval Islamic necropolis has been recorded at Rossio Pelado, a little under a mile and a half away.
1364-1835
Cascais existed as a chartered municipality from 1364 until administrative reforms reorganized it in 1835.
FamilySearch Places · record, medium
1488 onward, garrisoned to the 1870s
Starting in 1488, King John II ordered a chain of forts and towers built along Cascais to defend the mouth of the Tagus River, and troops garrisoned this stretch of coast into the 1870s.
Early modern
from 1572
This Catholic parish covering Cascais was established in 1572 and its jurisdiction has continued since.
FamilySearch Places · record, medium
1646
This coastal fort near Cascais, protected today as Immovable Cultural Heritage of Public Interest, was built in 1646 as part of the town's defensive chain.
Wikidata · record, high
1 November 1755
On 1 November 1755 the great Lisbon earthquake hit while the royal court was staying in Cascais, and the tsunami that followed wrecked boats in the harbor and killed close to 29% of the town's population.
from 1761
The Guia Lighthouse on the headland near Cascais has marked the coast since 1761.
Wikidata · record, high
Modern
1879
Constança Maria de Mendoça Rolim de Moura Barreto, Duchess of Loulé, died in Cascais in 1879.
Wikidata · record, medium
1889
Luís I, king of Portugal from 1861, died in Cascais in 1889, one of several nobles and officials whose deaths Wikidata records in the town.
Wikidata · record, high
1934
The Portuguese artist Carlos Bonvalot died in Cascais in 1934, aged just 41.
Wikipedia · record, high
1948
José Ângelo Cottinelli Telmo, the architect and film director behind some of Lisbon's best-known Estado Novo monuments, died in Cascais in 1948.
Wikipedia · record, high
1966
Delfim Santos, one of Portugal's leading 20th-century philosophers, died in Cascais in 1966.
Wikipedia · record, high
December 8, 2025
In December 2025, a vehicle went over a cliff at Cabo Raso near Cascais; two people died and two others were pulled from the rocks with minor injuries.
Portugal Resident · record, high

Questions about this place

Answered in one sentence, then in full above
What happened at Cascais during the 1755 earthquake?
The royal court was staying in Cascais on 1 November 1755 when the great Lisbon earthquake struck, and the tsunami that followed wrecked boats in the harbour and killed close to 29% of the town's population.
What was here before the Chabad house was built?
The plot in Costa da Guia had come to the municipality through a swap with the Catholic Church, and some residents wanted it kept as open parkland rather than handed to a new religious building; more than a hundred people protested the plan in September 2017 and again in February 2018.
Who was Eli Rosenfeld and what did he find in Portugal?
Eli Rosenfeld was an American student who arrived in Portugal in 2006 to research fifteenth-century Judaism there; he identified around forty rabbis who had lived and taught in the country before and during the Inquisition and published his findings in 2018 in a book called Vozes Judaicas de Portugal.
Which king died in Cascais?
King Luís I of Portugal, who reigned from 1861, died in Cascais in 1889.
Why were forts built along the Cascais coastline?
Starting in 1488, King John II ordered a chain of forts and towers built along Cascais to guard the mouth of the Tagus River, and troops were garrisoned along this coast into the 1870s to stop ships and unwanted arrivals.
Who is the Avner Cohen Casa Chabad named for and dedicated to?
The building's main hall is dedicated to Rabbi Isaac Aboab of Castile, a Jewish scholar who died in Porto, and the centre opened in 2020 after the Cascais municipality agreed in 2016 to grant land for it.

Where this came from

1
Citadel of Cascais and Cascais military history — Cascais built its coastal forts to guard the Tagus
2
1755 Lisbon earthquake impact studies and parish historical records (Marques de Pombal inquiry) — The 1755 earthquake and tsunami struck while the royal court sheltered in Cascais
3
Wikidata — King Luís I of Portugal died in Cascais
4
Wikidata — The Duchess of Loulé died at Cascais
5
Wikipedia — The architect Cottinelli Telmo died in Cascais
6
Wikipedia — Painter Carlos Bonvalot died in Cascais
7
Wikipedia — Philosopher Delfim Santos died in Cascais
8
FamilySearch Places — Cascais became a municipality under its own charter in 1364
9
FamilySearch Places — The parish of Nossa Senhora da Assunção e Ressurreição de Cristo was founded in 1572
10
Wikidata — The Fort of Nossa Senhora da Guia was built in 1646
11
Wikidata — The Guia lighthouse has stood at Cabo da Guia since 1761
12
Endovélico — Sistema de Informação Arqueológica — A Mesolithic open-air site sits at Quinta da Bicuda
13
Endovélico — Sistema de Informação Arqueológica — A Late Neolithic settlement lies at Casal Ventoso
14
Endovélico — Sistema de Informação Arqueológica — A Roman industrial complex operated at Bom Sucesso
15
Endovélico — Sistema de Informação Arqueológica — A Roman villa at Alto do Cidreira spans from the Paleolithic to the Middle Ages
16
Endovélico — Sistema de Informação Arqueológica — An Islamic-period necropolis lies at Rossio Pelado
17
Portugal Resident — A car went over the cliff at Cabo Raso, killing two

Dug nearby

A pocket of grand 1900s villas
Chalet Ficalho, Cascais
2 km
A hole where the sea comes in to kill
Vigia do Facho, Cascais
2 km
The man who faked his own death in a sea cave
Cascais
2 km
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