The Fortifications of Strasbourg are a series of defensive structures built to protect the city from invasions. These fortifications date back to the Roman era and were expanded over the centuries, particularly during the 30 Years' War and the Franco-Prussian War. The walls, bastions, and gates reflect various architectural styles and military strategies used throughout history. One of the most notable features is the Vauban Barracks, designed by the famous military engineer Sébastien Le Prestre de Vauban. The fortifications also include the Citadel of Strasbourg, which showcases the city's strategic importance in European conflicts. Today, these historical sites are recognized for their cultural significance and attract many visitors.