This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A medieval gate once used as a prison and how home to a city museum.

A ruined castle stands atop a hill surrounded by dragon lore.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

This enchanting mountain plateau celebrates spooky local folklore.

A strange rock formation with numerous legends trying to explain it.

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

This heavily worn bas-relief was once an honored fertility symbol.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Walk or bike along a narrow strip of Belgium sandwiched by German territory.

The highest cold-water geyser in the world.

One of the world's tallest flagpoles.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

A 141-foot wave of crashing lumber guards the entrance to the Grand Place in Mons.

Petting this mysterious iron monkey supposedly brings good luck.

Stocking up on the world's best beer requires a pilgrimage to a monastery drive-through.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

This memorial museum chronicles the apocalyptic destruction of the First World War.

A moving memorial to the fallen and missing from WWI trenches.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.