Some famous attractions include the splendid Town Hall and its Belfry (listed as an UNESCO World Heritage Site since 15 July 2005), the "Boves" (a maze 10 meters beneath the city), the Squares (La Place des Héros and La Grand'Place), the Art District (the Theatre of Arras and the Hôtel de Guînes), the Abbey District (The Saint-Vaast Abbey and the Cathedral of Arras), the Vauban Citadel, and the Nemetacum site (the ancient town founded by the Romans 2000 years ago).