The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

Somber memorial to the May 10, 1933, book-burning which took place on this spot.

Fantastic views and thousands of love locks.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Carved fountains poignantly placed in parks and in front of special monuments.

Model Trains and Much More in Hamburg.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This landmark vessel dry-berthed in Tacoma's harbor served in emergencies and ceremonies for more than 50 years.

This 18-foot-tall public art installation is another of sculptor Thomas Dambo's trolls.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

The only Leonardo Da Vinci painting in the Western Hemisphere.

A Roman holiday is closer than you think when you use this 1916 staircase inspired by Rome's Piazza di Spagna.

Out of a desire to feed hungry soldiers, a franchise-altering idea was born.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

Cascading outward, this waterfall creates the appearance of a flowing veil.

In 1909, the steepest and most difficult piece of track on the Canadian Pacific Railway was replaced with a series of spiralling tunnels cut into the mountains.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

Decorated by local artists, the city's utility boxes have become three-dimensional canvases.

The New Central Library is a masterpiece of contemporary architecture in the midst of downtown Calgary.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

A large wind turbine installation in central Washington State is home to an extensive set of interpretive exhibits.

This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

Despite being dead since the 1970s, this Canadian tree is kept upright and intact by adoring locals.