A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

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

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

This giant shopping mall still holds signs of its automotive past.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This lurid German fountain plots the sad course of marriage from dating to death.

Go surfing on this urban wave, "hacked" by local surfers.

An ancient pagan site swirling with legends in the foothills of Franconian Switzerland.

An eatery for UFO seekers on the Extraterrestrial Highway.

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

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

"There's nothing there," and other lies the KGB told us.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The once highest point in China blends symbolic design with a kick of adrenaline.

A son-and-daughter meat market, hawked by mom and dad.