AirBNB wants travelers to spend time "living" in the places they travel to rather than simply visiting. Unlike generic hotel accommodations, AirBNB lets travelers book homes from local "hosts" with the goal of experiencing a destination as a person would if they actually lived there. Rentals range from a modest apartment for a single night, to a castle for a week, all the way up to a villa for a month. AirBNB operates in more than 34.000 cities and 190 countries around the world. The service provides an easy way for homeowners to monetize their extra space. Founded in 2008, AirBNB offers a simple user interface that can be used online or from a mobile phone or tablet.