Madrid City Hop-on Hop-off Tour

http://www.excursionpass.com/tour/madrid-city-hop-on-hop-off-tour "Get a unique view of Madrid aboard this open-top double-decker bus. There are two tours covering all of the city's highlights, from historical sites and monuments to the modern Madrid of skyscrapers and cosmopolitan architecture. The Madrid City Hop-on Hop-off Tour enables complete flexibility to hop on and off as many times as you like so you can explore Madrid at your own pace. With the choice of either a one- or two-day pas