(1546), the Gothic church of St. Arnual, the 18th-century Saarbrücken Castle, and the old part of the town, the Sankt Johanner Markt (Market of St. Johann).

The modern city of Saarbrücken was created in 1909 by the merger of the three cities of Saarbrücken (now called Alt-Saarbrücken), St. Johann a. d. Saar, and Malstatt-Burbach. It was the industrial and transport centre