Historedia
EuropeEvent

Brescia Explosion

When
1769
Where
Bastion of San Nazaro, Brescia
Episodes
1

In 1769 lightning struck the Bastion of San Nazaro in Brescia, igniting roughly 90,000 kg of stored gunpowder. The resulting explosion destroyed one-sixth of the city and killed 3,000 people, devastating Brescia.

Episodes

  1. 1769 · Bastion of San Nazaro, BresciaLightning strike ignites the San Nazaro powder magazine

    Lightning struck the Bastion of San Nazaro in 1769, igniting 90,000 kg of gunpowder; the explosion destroyed one-sixth of Brescia and killed 3,000 people.

Background and detail

Background. Brescia is a city and comune in Lombardy, Italy. The sources identify the Bastion of San Nazaro as the disaster site, where gunpowder was stored; the passages state that a fire resulting from a lightning strike ignited the powder kept there.

The Explosion. In 1769 lightning struck the Bastion of San Nazaro, and the resulting fire ignited 90,000 kg (200,000 lb; 99 short tons) of gunpowder stored there. The massive explosion destroyed one-sixth of Brescia and killed 3,000 people, devastating the city.

Aftermath and Significance. The blast's scale—destroying a sixth of the city and killing 3,000 people—made the Brescia explosion a landmark disaster for the city. The sources do not record its wider consequences, so its significance rests on the extent of the physical destruction and loss of life.

People involved

  • City of Brescia · affected municipality whose population suffered the casualties and urban destruction

Sources

  1. Brescia Wikipedia, revision of 2026-09-18

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.