1755 Lisbon earthquake affected Sintra site. The 1755 earthquake was the largest in human history, measuring 9.6 to 9.9 on the Richter scale The earthquake caused damage to structures on Sintra mountain Some stones fell and were displaced during the earthquake

The 1755 Lisbon earthquake — one of the most powerful to strike Europe — measured approximately 8.5–9.0 magnitude. Some displaced stones and structural damage from that catastrophic event remain visible at the site.

Key Facts

  • The 1755 earthquake was the largest in human history, measuring 9.6 to 9.9 on the Richter scale
  • The earthquake caused damage to structures on Sintra mountain
  • Some stones fell and were displaced during the earthquake
  • The site remains in disarray due to this catastrophic event

Related site: Sintra / Olisipo — view location, images, and history on the Ancient Nerds map.