Berlin City Tour

Open-top doubledecker buses circle the main sights in about two hours; the green ones have live English commentary; red ones have audioguides. Board at Kurfürstendamm 14, the Town Hall or Brandenburger Tor and hop-on or hop-off as you like. There's also a narrated 'Wall & Lifestyle' tour taking in the main Wall sights and some trendy districts.