Dramatic river bend surrounds a natural red-rocked pedestal.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A tunnel with windows, so you don't miss out on the impressive views.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Come for the speed, leave in love with the desert.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

The metal leaves on this tree are engraved with the names of Holocaust victims.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Once the home of a hermetic monk, this cave now houses a small church.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

This sculpture honors the man who was known as the "Righteous Among the Nations."

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The true meaning behind this sculpture remains unknown.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.