History of Strasbourg remained neutral during the Thirty Years' War (1618-1648), and retained its status as a Free Imperial City. However, the city was later annexed by Louis XIV of France to extend the borders of his kingdom. Louis' advisors believed that, as long as Strasbourg remained independent, it would endanger the King's newly annexed territories in Alsace, and, that to defend these large rural lands effectively, a garrison had to be placed in towns such as Strasbourg. Indeed, the bridge over the Rhine at Strasbourg had been used repeatedly by Imperial (Holy Roman Empire) forces, and three times during the Franco-Dutch War
Seat of the European Parliament in Strasbourg on 1 September was moved to the Brussels hemicycle. Parliament was expected to move back to Strasbourg for the session starting on 22 September but had to remain in Brussels for that session as well as safety inspections dragged on. The event was greeted with joy by those who oppose the Parliament's presence in Strasbourg, and mocked by eurosceptics who wore hard hats to the first plenary in Brussels after the incident (if Parliament had been sitting at the time, the collapsing ceiling would have hit members of the eurosceptic parties). In August 2012, the Paul-Henri Spaak building in Brussels