The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The 28-foot granite map plots the locations of 40 theaters in New York City.

There are owls with glowing eyes in Herald Square.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

New York's oldest magic store.

This translucent sculpture represents a quintessential component of New York City's skyline.

These unique "earth pyramid" clay columns can be found in ravines around the village of Tirolo.

A small museum dedicated to the history and design of German packaging.

Dine amidst exotic plants at this former royal greenhouse.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

A spitting ode to a German serial killer.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

The first, and perhaps only, monument dedicated to Wikipedia.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

A stunning two-story timepiece within a medieval Brick Gothic church.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.