Walking down
On Wednesday, after hiking the Inca Trail to Machu Picchu, it took over half an hour to buy bus tickets down to Aguas Calientes, because the employees couldn't figure out the new system. On Thursday, we were told that it would take an hour and a half. That's about how long it takes to walk down to Aguas Calientes, so we hit the stairs. This wall, and the Inca stairs, are original. Obviously, nobody took a shuttle bus 500 or 600 years ago.