Berlin Walks is the longest-operating English language walking tour in the city with experience since the early 1990s. They have 10 different regular tours, e.g the daily 3,5-hour Discover Berlin tour which starts at the Weihenstephaner restaurant on Hackescher Markt at 10.30 . Check online for all themed tours like Third Reich, Cold War, Queer Berlin, Jewish Berlin and Potsdam.