- Experience the best of Frankfurt as you tour the city's sights and attractions with this hop-on hop-off bus pass for 24 hours - Easily hop on and off at any of the stops, a perfect idea if you prefer to explore the attractions a little longer - Explore Frankfurt's popular attractions such as Town Hall, Main Tower, and Riverbank Museum and more - Travel with ease and enjoy an audio guide set to your preferred language onboard a comfortable and safe bus