Antelope Canyon, Arizona- After you squeeze into the canyon you're met with a metal ladder to help you get to the bottom. Before the ladder was installed travelers had to rappel to the bottom, and there wouldn't be any way to get out of the canyon at the opposite end without a ladder. Photo by Travis Burke.
Love to visit university museums when you travel? Then, check out this global ranking of Best Colleges Online’s 2013 international list of the “30 Most Amazing University Museums.” Learn more at http://www.examiner.com/article/university-of-arizona-on-30-most-amazing-university-museums-list?cid=rss