Machu Picchu, the ancient Inca city built nearly 8,000 feet above sea-level atop Peru’s Andes mountains, is comprised of sprawling terraces, narrow trails and over 100 flights of stairs. This won't stop Álvaro Silberstein's dream of exploring it once again; this time, however, as a wheelchair user. Álvaro is the co-founder of Wheel the World, a company that is empowering people with disabilities to explore the world without limits by providing accessible travel experiences in the most amazing destinations.