Established in London over 25 years ago, Big Bus Tours is the largest operator of open-top sightseeing tours worldwide, currently operating in 23 cities across the globe. Our tours take in all the top sights of each city and you can hop-on and hop-off at major landmarks to explore in your own show more » time. Recorded commentary is available in multiple languages and we also offer live guides in many of our locations. In addition to the tours themselves, we enhance the sightseeing experience by providing a range of complementary experiences such as river cruises, guided walking tours and entry to local attractions.