Visiting Machu Picchu usually involves some kind of a trek. Either an infinitely long train ride, or an almost week-long walk uphill. Though everyone says the views are worth the journey, this virtual platform offers an easier way to view the 15th-century Incan citadel. Sit back, relax, and enjoy the voice-over tour, which provides information on the architecture, the history, and, of course, the local llamas and alpacas. —E.C.