Napoleon ordered a series of slipways to be built near the present-day Cockerillkaai. They were part of the shipyard where a war fleet was to be built.
Under Napoleon, the French government built an arsenal for its war fleet, in the area between the Scheldt and Kloosterstraat, installing a shipyard and several workshops.
Before the Spanish ramparts and citadel were built, the city relied on medieval ramparts and towers for its protection. Kronenburg Tower was one of these defences.
This command bunker was built at the end of the 1930s. The Passive Air Raid Defence Department coordinated its activities from here in case of a bombing.