The Powder Magazine, Museum in Boulogne-sur-Mer, France
La Poudrière is a former military gunpowder storehouse built on a cliff in Boulogne-sur-Mer, in northern France. The stone building has a single vaulted room with thick walls and narrow slits designed to allow air to circulate while keeping the contents dry and safe.
The building was constructed during the Napoleonic era, when Boulogne-sur-Mer served as a base for a planned invasion of England. In 1841 a wall, a guardhouse, and a courtyard were added; it was later closed after the Second World War and restored in 1990.
La Poudrière sits on a cliff with open views toward the sea and the English coast. Nearby, a column honoring Napoleon and a Legion of Honor stele stand together, marking this as a place where the military past of the region is still visible today.
The building can only be seen from the outside, as the interior is not open to visitors. The surrounding area is pleasant for a walk, and the nearby monuments make it worth taking a little time to explore on foot.
The narrow slits in the walls were designed not only to let air in but also to stop flames or sparks from entering the building. The soldiers' barracks were placed only about 10 meters (30 feet) away from the storehouse, so the troops could keep watch over it at all times.
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