The 1755 Lisbon Earthquake and Pombal’s Radical …

Years: 1684 - 1827

The 1755 Lisbon Earthquake and Pombal’s Radical Reconstruction

On the morning of November 1, 1755, Lisbon was devastated by one of the most destructive earthquakes in European history. The massive tremor, followed by a firestorm and a tidal wave, killed tens of thousands and destroyed most of the city.

The response of Sebastião José de Carvalho e Melo, the Marquis of Pombal, was decisive and transformative, shaping Lisbon’s modern identity and turning it into Europe’s first planned city.


The Disaster: Earthquake, Fire, and Tsunami

  • The earthquake, estimated at magnitude 8.5 to 9.0, struck on All Saints' Day, when churches were filled with worshippers.
  • Fires ignited by candles and lamps in churches and homes spread uncontrollably, consuming the city.
  • A tsunami swept into Lisbon’s harbor and waterfront, destroying ships and drowning thousands.

Pombal’s Immediate Response

Despite the unprecedented scale of destruction, Carvalho, who was in Belém at the time, took swift action. His response demonstrated his effectiveness as a leader:

 Emergency Relief Measures

  • He improvised hospitals for the injured.
  • Controlled prices to prevent profiteering.
  • Requisitioned food from the countryside.
  • Organized public security, preventing looting and chaos.

 Survivor Management and Law Enforcement

  • Buried the dead quickly to prevent disease outbreaks.
  • Executed looters and criminals publicly, ensuring order.

The Rebuilding of Lisbon: Europe’s First Planned City

After surveying the ruins, Pombal ordered the complete reconstruction of Lisbon, led by:

  • Eugénio dos Santos (architect).
  • Manuel da Maia (engineer).

Their master plan transformed Lisbon’s city center into a rational, grid-based layout, featuring:

  • Long, straight avenues and cross streets for easy navigation.
  • Earthquake-resistant buildings, using innovative construction techniques, including wooden frameworks ("gaiola pombalina") designed to absorb seismic shocks.
  • Uniform neoclassical architectural styles to give the city a cohesive look.

The rebuilt district, flanked by Praça do Rossio and Praça do Comércio, is known today as the Baixa Pombalina, a symbol of Portugal’s resilience and modernization.


Conclusion: Pombal’s Legacy as a Reformer

Pombal’s bold leadership during the 1755 Lisbon Earthquake demonstrated his Enlightenment ideals and modern governance. His reconstruction of Lisbon set a precedent for urban planning in Europe, while his decisive actions saved lives and restored order. The Baixa Pombalina remains a lasting monument to his vision, ensuring that Lisbon rose from disaster stronger than before.

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