Hop On - Hop Off bus tours are a great way to travel independently, quickly get an idea of a city by vehicle before exploring yourself, or take in an express tour in a day. Hop On - Hop Off buses can start to 1 hour tours in New York City up to 3 months traveling around Europe with Busabout (starting in early May).

Hop On Hop Off is all about flexibility, as the name suggests. Most operators have several stops along the way, where you can get off and look around, and catch a later bus or van coming by. Or you can stay onboard the entire time and take in the city (or country), usually from the comforts of a double-decker bus! Here are some hop on-hop off sites we like: Hop On-Hop Off is a good starting point to find a hop on-hop off bus where you are traveling to. There are about 50 one day-three day tours in a simple drop down menu that take you to the to the web site for Viator, a "traveler's one-stop-shop for researching, planning and booking destination activities in more than 400 destinations worldwide". There are longer term hop on hop off buses, which don't seem to be on this web site.