A hotel and restaurant serving as the mecca of kitsch.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

A public art installation featuring clawfoot bathtubs on stilts sparks admiration and controversy from locals.

This (occupied) house is 10 feet wide and full of spite.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Half of a house.

One of the smallest parks in San Francisco honors the legacy of the "Mother of Civil Rights in California."

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

In the "Danish Capital of America," a replica of one of Copenhagen's most iconic buildings.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

California's oldest wind harp represents a historic piece of America's Danish history.

The oldest alley in San Francisco is paved with a reminder of the city's original shoreline.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

A whimsical bridge adorned with decorative dragons.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The first mosque in the world to receive electricity.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

Bridge that died in war and was resurected.