OnBoard Tours, Las Vegas

There are five main reasons to choose OnBoard Tours for your voyage through New York, Washington D.C., or Las Vegas. First, the tour guides don't just deliver their spiels from the comfort of the bus, they'll hop off with their passengers for a more up-close look. Second, riders need a ticket for the comfortable, climate-controlled buses, so no tourist will be left unseated on the trip. Third, they limit each group to 35 people, meaning everyone can see and hear the guide at all times, and will have a chance to ask them specific questions. (And small, private tours can also be arranged.) Fourth, the guides are all locals, and tell stories from an insider's point of view. Finally, all tours feature free water bottles, allowing guests to stay hydrated, save money, and avoid the hassle of trying to drink from any decorative fountains.