Help rebuild the Great Wall of China…and other volunteer adventures in the natural world

The world’s longest man-made structure—stretching more than 4,000 miles—China’s Great Wall also ranks among the World’s 100 Most Endangered Sites. Beyond its restored areas—those that are most-visited by tourists—hundreds of miles lie in disrepair. Volunteer vacationers are sought to help clean and rebuild sections of the wall where restoration projects are already underway.