Powder tower

"A powder tower (German: Pulverturm), occasionally also powder house (Pulverhaus), was a building used by the military or by mining companies, frequently a tower, to store gunpowder or, later, explosives. They were common until the 20th century, but were increasingly succeeded by gunpowder magazines and ammunition depots. The explosion of a powder tower could be catastrophic as, for example, in the Delft Explosion of 1654.

Buildings formerly used as powder towers include the following:

Langer Turm, Aachen

Pulvertürmchen in Aachen

Pulverturm, Andernach

Pulverturm, Anklam

Pulverturm, Bad Bentheim" - (en.wikipedia.org 25.04.2021)