Powder Tower
The Latvian War Museum is located in the Powder Tower. It has been rebuilt several times and obtained its present name in the 17th century when gunpowder was stored there.
There were 11 cannons placed in the tower, and also a "cannon ball catcher". Later there was a prison and torture chamber in the tower, and weapons were stored there until 1883. When the War Museum was opened in the tower, a museum’s wing was built where to display the exhibition.
The height of the round tower is 25.6 meters, its diameter is 14.3 meters, while its walls are three meters thick. You can see cannon balls in the tower that were walled in to remember the Second Northern War.