Hip Bockenheim is a low-key neighborhood centered on bustling Leipziger Strasse with its casual, student-friendly restaurants, cafes and late-night bars. It’s known for the Bockenheimer Warte, a medieval watchtower, and the nearby U-Bahn entrance resembling a subway car bursting out of the pavement. Rebstockpark has walking paths, lawns for picnicking and barbecuing, and a water park with indoor and outdoor pools.