Though its current incarnation was built by the Turks in the 18th century, there have been forts on this site since ancient Roman times. Today it's a sprawling recreational area with restaurants, cafes, market stalls and ample space for moseying, as well as the 16th-century Bali-beg Mosque. The fortress hosts the 狈颈拧ville International Jazz Festival each August and 狈颈拧omnia, featuring rock and electro acts, in September. The city's main pedestrian boulevard, Obrenovi膰eva, stretches before the citadel.