22. Chacaltaya Glacier

For decades it was one of the best places to ski in the world. Then one day, it was gone. The Chacaltaya Glacier, in its glory days, was one of the highest glaciers on the planet and attracted thousands for skiing and snowboarding. But then all that history just melted away.

The 18,000 year old glacier in Bolivia began to noticeably change starting in the 1980s, and from that point on it kept deteriorating. By 2009, the entire glacier was gone, and as it washed away as did the tourism to the area. The bygone tourist site now hosts a research observatory and some abandoned ski resorts.