1. Frankfurt: Hop-on Hop-off Day Skyline or Express City Tour
Enjoy a sightseeing tour through Frankfurt aboard a comfortable double-decker bus. When the weather's good, the roof of the bus stays open, letting you take in a clear view of the most beautiful buildings and parks in the city. Get to know this bustling metropolis in a whole new way as you listen to commentary in 10 languages. Hop on or off the buses as often as you like at any of the stops along the route, sprinkled throughout the city's most interesting areas. Learn about Frankfurt's main attractions while on the bus, or explore the city's beautiful sights at your own pace. Take a trip through the bustling city center (Express City Tour) or along Frankfurt's famous skyline (Skyline Tour), both available for one just one price. Stops: Paulskirche - Römer - Goethe-Haus - Main Tower - Alte Oper - Palmengarten - Senkenbergmuseum - Messe - Hauptbahnhof - Museumsufer - Eisener Steg - Alt Sachsenhausen - Untermainkai - Mainkai - Zoo Frankfurt - Hauptwache. You can get on or off at any of the 16 stops as many times as you please with the 24 hour hop-on hop-off ticket.