They are recommended when spending a short amount of time and wishing to visit several areas in a city. For short trips, it's important to plan accordingly as visitors might wish to see several landmarks and not spend excessive amounts of time travelling between them.This can be made easier with a dedicated sightseeing bus tour, like the Hop-On Hop-Off bus tours, that offer a route between several popular areas. Take the bus to see the city from the inside or disembark at certain stops to visit the highlights of the city from the ground. Check out the tour route before you buy a ticket in case you want to go to the places you aren't planning to visit. The service might be especially helpful if a lot of your favorite activities are off the list. If you have just a day or two to see the sights, it is also important to check the hours of operation and how often the buses run.