Dramatic river bend surrounds a natural red-rocked pedestal.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

On the Oregon coast there is a natural hole that seems to be draining the sea.

An emerald-green grotto just a short trip from Austin.

A crumbling hospital from the 1850s on Roosevelt Island.

Most-visited and most-photographed slot canyon in the American Southwest.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

World's first "penitentiary," meant to be humane, drove men insane.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

A diverse collection of wax, bone, papier-maché and mummified relics.

An amazing collection of wax anatomical models and terratological models.

An extraordinary collection of 18th century anatomical waxworks.

The mummified relic of St. Catherine sits forever on a golden throne.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A Hawaiian stairway to heaven—that you can't climb.

This airstrip atoll is uninhabited by humans, but absolutely full of birds.

This tiny Hawaiian island is slowly coming back to life after being bombed during naval training exercises.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This WWII plane died a quiet death, and is now a garden eel playground.

A controversial memorial at the place where Captain Cook met his violent end.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.