The most loyal of little dogs, or a Victorian era publicity stunt?

This small museum in a 17th-century building honors three iconic Scottish writers.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A 18th century graveyard and its astonishing cortege of macabre iconography.

This series of Scottish caves has no clear purpose other than baffling historians.

Stockholm's deepest subway station is also a stunning ecological wonder.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Like Mardi Gras, only everyone's a pirate.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

One of the last of the great 1920s movie palaces is a Floridian Greco-Spanish-Persian dreamscape.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

These temples are among the oldest free-standing stone buildings in the world.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

Ancient mysterious ruts carved in the bedrock.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

A statue dedicated to the antihero of the Nibelung legend.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

Cold war icon and onetime "hole" in the iron curtain.