Known as "Toronto's Flatiron."

The world's first motorway was used as a racetrack until the late 1990s.

You've probably seen these distinctive orange-tiled columns on the big screen.

Depending on the region's rainfall, this church may be partially submerged.

One of the best-preserved remains of "Tokyo's lost rivers."

A historic ghost town still worth a visit.

California's longest-running tourist attraction is a stump.

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

These markers are used to document elevation changes around the famed dam.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

This historic castle was already in ruins by the 13th century.

A Dutch museum preserves the world's most diverse collection of vertical slices of soil.

A thought-provoking outdoor art installation sits in the seat of German law.

A former customs station on the border of Germany and the Netherlands.

These ungulates have quite literally bounced back from the brink of extinction.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

A bridge that has seen many reiterations over its lifetime.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

This small chapel is built of human bones and decorated with a golden skeleton.

The world's largest wooden structure.

A condensed piece of China floating in a Dutch harbor.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

These ramparts, once lined with towers, were constructed in defense of Beaune.