Continuing the tradition of the dime museum in style.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Paths are maintained, but trees have taken over plots.

A sculpture of a salmon swimming through a brick building.

The birthplace of the Ford Model T is now a museum full of antique cars.

This mechanical wonder towers above a river in Michigan's capital city.

This experiment in the lifespan of seeds will take a century before it is complete.

The plants form a living library and laboratory for researchers and students at Michigan State University.

A horse-drawn 1858 steam pumper fire engine encased in glass on the front lawn of a Michigan insurance company.

At the top of a local ski mountain is a hidden cemetery containing the graves of just two soldiers.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The middle finger of modernity.

Step inside an ancient beehive tomb built for a mysterious cult hero.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This shallow cave got its name from copious amount of human bones found inside.

The ruins of a monastery where Saint Bridget of Sweden had her revelations recorded.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Once the tallest building in Detroit, this Gothic church houses some of the oldest stained-glass windows in the country.