Nature

Sloth rehabilitation center in the jungle of Costa Rica.

Mineral springs believed to hold therapeutic properties draw in visitors from all over.

World's largest cave was only discovered in 1991, and now offers tours to the public.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

An ancient stone fortress considered by many to be the eighth wonder of the world.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

Longest canal tunnel in the world, abandoned in the 1960s.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

Rare mummified forest could offers a glimpse into how our environment has been changed by humans.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

One of the most unusual geological features, recognizable from a dozen hit movies.

Sleepy fishing port not included on many maps.

Large rock high in the mountains of Yunnan that is naturally shaped like a chair, complete with arms.

Only intact Ichthyosaur skeleton in the United States and an abandoned gold mine and ghost town all in one place!

Rocky Atlantic beach home to a stunning stone arch.

The world's largest dark sky preserve is a Canadian park established to preserve the country's last wood bison.