The 1755 Lisbon earthquake, also known as the Great Lisbon earthquake, impacted Portugal, the Iberian Peninsula, and Northwest Africa on the morning of Saturday, 1 November, Feast of All Saints, at around 09:40 local time. In combination with subsequent fires and a tsunami, the earthquake almost completely destroyed Lisbon and adjoining areas. Seismologists estimate the Lisbon earthquake had a magnitude of 7.7 or greater on the moment magnitude scale, with its epicenter in the Atlantic Ocean about 200 km west-southwest of Cape St. Vincent, a cape in Algarve region, and about 290 km southwest of Lisbon.
1755 copper engraving showing Lisbon in flames and a tsunami overwhelming the ships in the harbor
Calculated travel times (in hours) for the tsunami waves of 1 November 1755
The ruins of the Carmo Convent, which was destroyed in the Lisbon earthquake.
Executions in the aftermath of the Lisbon earthquake. At least 34 looters were hanged in the chaotic aftermath of the disaster. As a warning against looting, King Joseph I of Portugal ordered gallows to be constructed in several parts of the city.
All Saints' Day, also known as All Hallows' Day, the Feast of All Saints, the Feast of All Hallows, the Solemnity of All Saints, and Hallowmas, is a Christian solemnity celebrated in honour of all the saints of the Church, whether they are known or unknown.
The Forerunners of Christ with Saints and Martyrs by Fra Angelico
Flowers deposited on All Saints' Day in tombs in the cemetery of Cambados, Spain
All Saints' Day at a cemetery in Gniezno, Poland – flowers and candles placed to honor deceased relatives (2017)
Giant kite (barrilete) at Sumpango, Guatemala
