Today, you're a total history buff, especially when it comes to ancient civilizations: ultra-fascinating! Explore your options. How does peru sound? Join a rigorous archaeological dig to uncover artifacts of the wari empire, which existed from 540 to 900 ad. And it's hardcore (the more extreme the better as far as you're concerned). Between the high altitude (11,000 feet) and the heavy digging, you'll be in hog heaven.