The so-called Powder Tower originally served as one of the Riga defensive system buildings. There is no information on the exact date of the construction, but the first tower on this place was built in the 13th century. The name of a tower - Powder, has appeared later. In documents for the first time this place has been mentioned in 14th century by the name of Sand tower. The modern tower has been constructed on a boundary of 15th and 16th centuries. During the centuries it has been collapsed and later restored. The entrance of the tower was at the height of 5 meters, and it was possible to get to a tower only having walked upstairs.
After the Great Northern War the Powder Tower lost its military value. Tower reconstruction was began in the end of 19th century. The new pointed roof has been constructed. Last time the tower has endured reconstruction after the First World War when the Military museum of Latvia has been situated in it.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.