Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

This cave overlooking the Indian Ocean has been turned into a shelter and makeshift museum.

This museum explores the tumultuous history of Lviv under Nazi and Soviet occupation.

Also known as Napoleon's Canal, this waterway was created on the orders of the general, and construction was interrupted by Waterloo.

This giant metal cross perched atop a mountain can only be reached by foot.

Its most grisly object is a jar full of severed fingers allegedly cut off by prisoners to avoid work.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

The venerated body of a 12th century saint is celebrated each year with the 'Race of the Candles.'

Some of the ancient-looking huts among these strange rock formations aren't ancient at all, but built as part of a movie set.

The composer did some of his finest work in this country home, including "The Nutcracker."

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

The world's oldest continuously operating airport was founded by the Wright Brothers.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

Unusual hexagonal rocks formed by cooling lava named for their resemblance to traditional Japanese tatami mats.

A climbing route in the mountains of Italy’s Dolomites, built for soldiers during World War I.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

At the center of an island in the middle of the Indian Ocean is a deep chasm ringed by tall waterfalls.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.