Stern has dozens of vessels conducting tours in Berlin and surroundings. Their historical city centre tours depart every half hour from the Nikolaiviertel, stopping off at the Kanzleramt and Berliner Dom. The Spreefahrt river tours from Schlossbrücke in Charlottenburg, takes in the river north of Treptow. The longer Brückenfahrt tour loops around town dozens of times per day.