The Powder Tower (Latvian: Pulvertornis) is situated in Riga, Latvia, and originally a part of the defensive system of the town.

The current Powder Tower was built in 1650 and renovated in the years 1937 to 1940 when it was added to the structure of the Latvian War Museum.

[2] The entrance to the tower was five metres (16 ft) above the ground and the building could only be entered by a narrow staircase.

In horizontal cross-section, the tower was horseshoe-shaped: in some places, the three-metre (9.8 ft) thick wall of the tower faced the outskirts, while the wall on the city side was made of wood (bricks at the time were an expensive building material).

There were 11 cannons in the tower, and a "bomb catcher" was installed: between the fifth and sixth floors, a meter-thick ceiling of three layers of oak and pine logs was laid.