The 1755 Lisbon earthquake is a great earthquake that impacted , the Iberian Peninsula, and so on at 1st November 1755. The earthquake causing serious damage to the Lisbon, and killing an estimated 60,000 people in Lisbon alone. Also, Violent shaking demolished about 12,000 dwellings. Since November 1st, when the quake struck, was All Saints' Day, many people were attending the Mass at the time of the quake. The church collapsed in the shaking and many people died. In addition, The earthquake generated a tsunami that produced waves about 20 feet (6 metres) high at Lisbon. Shocks from the earthquake were felt throughout Europe, and the disaster became a seminal event in European history. 