Whether from civil unrest or environmental degradation, many of the world's great cultural and historical landmarks remain threatened. Fortunately, there are groups like the World Monument Watch who keep close tabs on the state of these important resources. On the site, visitors can traipse on through an interactive map of the world to learn about each site. For each site, visitors will find a photograph of the landmark, a short essay on the history of each landmark, and some explanation of the reasons for its inclusion on the list.