The story under this square

An architect who never saw it finished

A short walk north, one man's water tank outlived him by seventy years.
Last reviewed 21 September 2026 · A two-minute read · 1431–2017
The short answer

Rua do Cabo sits near Campo de Ourique, ground that was farmland and orchards until Lisbon's 1755 earthquake sent survivors uphill to settle there. Half a mile away, architect Carlos Mardel spent eighteen years building the Mãe d'Água reservoir, dying in 1763 with it unfinished; it was not completed until 1834.

An architect who never saw it finished — Lisbon
RAF graves in the English Cemetery ( Cemitério Inglês ) in the Estrela district of Lisbon. — 2011 · Nikodem Nijaki · CC BY-SA 3.0
1745 to 1763

An architect spent eighteen years on an unfinished reservoir

Half a mile from here stands the Mãe d'Água das Amoreiras, the reservoir built to catch water from Lisbon's aqueduct. Carlos Mardel, a Hungarian architect working in Portugal, designed it in 1745. It was meant to be the final stop where fresh water would reach the city.

The first site chosen for it sat near São Roque, on land belonging to the Counts of Soure. Workers tore down houses and leveled the ground. Then Sebastião José de Carvalho e Melo, Marquis of Pombal ordered the reservoir moved to Campolide de Baixo, near Rato.

Mardel worked on the new site for eighteen years. He never saw it finished. He died in 1763 with the building still half done. The great water chamber was open to the sky.

Somebody had to pick up an old man's unfinished tank.
1772 to 1834

Another architect finished the reservoir eighty-nine years after it began

Nine years after Mardel's death, the architect Reinaldo Manuel dos Santos took over the project in 1772. He changed both the inside and the outside of the design. He reworked what Mardel had left behind.

The work dragged on. The roof over the reservoir's deep stone tank did not go up until 1834. This was during the reign of Queen Maria II. Eighty-nine years after Mardel first drew the plans, the reservoir finally began full operation. It stored water seven and a half meters deep. A city that had waited generations for it finally had it.

1755, in one year

A king's palace was designed for this high ground and never built

Lisbon's earthquake tore down the Ribeira Palace and killed tens of thousands. King Joseph I needed a new residence. The architect Dionizio de S. Dionizio drew him one for Campo de Ourique, the high ground rising behind the unfinished reservoir. The design was grand. Nobody ever laid a stone.

The plans went nowhere for decades. Mardel's reservoir sat open to the rain through those same years, half a mile away, waiting on its own roof. Campo de Ourique got neither.

A king's replacement palace exists only on paper.
1755 and after

Earthquake survivors settled farmland and founded a neighborhood

The earthquake sent survivors climbing out of the ruined city center. Campo de Ourique had been orchards and farmland before that year. Displaced Lisboetas pitched camp on the plateau and stayed. A settlement grew there with no plan behind it, built by people with nowhere else to go.

The reservoir still stands half a mile north, its roof finally sealed a century after the ground around it filled with refugees.

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Where this is

38.719°N 9.157°W TILE ≈ 1.2 × 0.6 KM
Place
Rua do Cabo
Town
Lisbon
Country
Portugal
Tile
≈1.2 × 0.6 km (geohash6)
Last reviewed
21 September 2026

The layers, in order

Sourced records, high and medium confidence. Era background is marked as such.
Medieval
1431
Nuno Álvares Pereira, the 14th-century Portuguese general who helped secure independence from Castile, is buried in the Igreja do Santo Condestável about 665 meters away.
Wikidata · record, high
Early modern
18th century
The old Quartel de Campo de Ourique, a barracks dating to the 18th century, gave the district its name and long military character; a surviving Pombaline-era core of it still stands about 230 meters away.
Wikidata · record, medium
1745-1834
Designed in 1745 and finished in 1834, the Mãe d'Água das Amoreiras reservoir was the final stop of Lisbon's great aqueduct, standing about 520 meters northeast.
Wikipedia · record, high
1754
The English novelist Henry Fielding, author of Tom Jones, died in Lisbon in 1754 and is buried in the British Cemetery about 200 meters from here.
Wikidata · record, high
1755 onwards
After the great earthquake leveled downtown Lisbon and killed tens of thousands, survivors fled uphill to Campo de Ourique, which had been farmland and orchards, and started the settlement that grew into today's neighborhood.
Lisboa de Antigamente blog · record, medium
1755-1770s
After the earthquake destroyed the royal Ribeira Palace, architect Dionizio de S. Dionizio drew up plans for a replacement royal palace on this ground, but the project was abandoned and forgotten.
Wikipedia · record, medium
completed 1790
Built on Queen Maria I's vow after the loss of an heir, the Estrela Basilica became the first church in the world dedicated to the Sacred Heart of Jesus.
Wikipedia · record, high
Modern
The British Cemetery holds Royal Air Force graves from the Second World War, tended among the ordinary dead of Lisbon's English community.
Casa Fernando Pessoa, dedicated to Portugal's great modernist poet, stands about 270 meters from this spot in Campo de Ourique.
Wikipedia · record, high
1816
Queen Maria I of Portugal, who reigned from 1777 to 1816 and vowed to build the Estrela Basilica, is buried inside it, about 575 meters from here.
Wikidata / Wikipedia · record, high
19th-21st centuries
Prazeres Cemetery, about a kilometer away, holds several Portuguese heads of state and prime ministers, including President Mário Soares, who died in 2017.
Wikidata / Wikipedia · record, high

Questions about this place

Answered in one sentence, then in full above
What was here before Campo de Ourique became a neighborhood?
The ground had been orchards and farmland before the 1755 earthquake, when survivors fleeing the ruined city center climbed to this plateau and settled it with no plan behind the building that followed.
What happened at Campo de Ourique after the 1755 earthquake?
Displaced Lisboetas who had lost their homes in the earthquake pitched camp on the plateau and stayed, and a settlement grew there that became today's district.
Who designed the Mãe d'Água reservoir near Rua do Cabo?
Carlos Mardel, a Hungarian architect working in Portugal, designed the reservoir in 1745 and worked on it for eighteen years, but died in 1763 before it was finished.
Was a royal palace ever built near Rua do Cabo?
No stone was ever laid. After the 1755 earthquake destroyed King Joseph I's Ribeira Palace, architect Dionizio de S. Dionizio drew plans for a new palace on the high ground of Campo de Ourique, but the project went nowhere for decades.
When was the Mãe d'Água reservoir finally completed?
The reservoir's roof went up in 1834, during the reign of Queen Maria II, eighty-nine years after Mardel first drew the plans and nine years after Reinaldo Manuel dos Santos took over the project in 1772.

Where this came from

1
Lisboa de Antigamente blog — The 1755 earthquake pushed refugees uphill to this ground
2
Wikipedia — A palace for King Joseph I was designed here and never built
3
Wikidata — An 18th-century army barracks anchored Campo de Ourique
4
Wikidata — Henry Fielding lies in the British Cemetery down the street
5
Wikimedia Commons photograph — An RAF war cemetery lies within a short walk
6
Wikidata / Wikipedia — Queen Maria I is buried in the Estrela Basilica she built
7
Wikipedia — The Estrela Basilica was the world's first church dedicated to the Sacred Heart
8
Wikidata — A medieval military hero is buried nearby
9
Wikipedia — Fernando Pessoa's house is a short walk from here
10
Wikipedia — The Mãe d'Água reservoir ended the Águas Livres Aqueduct nearby
11
Wikidata / Wikipedia — Presidents and prime ministers rest in Prazeres Cemetery

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