When ecosystems collide in the arid Southwest.

Roadside collection of 65,000 signs.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A museum dedicated to the lovable crime couple Bonnie & Clyde, just a few miles away from the site of their early demise.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The highest bridge in America was built for an almost unnervingly small amount of money.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

Every year, a Louisiana town remembers a brief Civil War truce inspired by Masonic brotherhood.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

An abandoned factory along the Mississippi coated by a giant mural.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The last bastion of Roman presence north of the Alps looms over a German town.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

Every president in history is immortalized in bronze in downtown Rapid City.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

Native Americans built this circle of stones, which was used to predict astronomical events.

A giant 400-acre preserve in North Florida for displaced wolves.