A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A reimagined 19th-century Acadian village featuring authentic Cajun-style homes filled with artifacts specific to the period.

The smallest post office in the United States is no bigger than a broom closet.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The clock that sets them all.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

A subterranean house of worship carved right out of the bedrock.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

A statue built to honor the elite soldiers who fought for Latvia during World War I.

Flamboyant architecture from the turn of 20th century.

A Latvian rescuer who saved countless lives during World War II.

This enigmatic artifact remained buried in a churchyard for years.

3,000 market stands in five former Zeppelin hangars.

This charming Latvian lane doubled as Baker Street on the Soviet Union’s version of Sherlock Holmes.

Rub it for a bit of good luck.

A miraculous three-handed portrait of a saint can be found inside this church.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

The largest coin pyramid in the world is a carefully balanced stack of over 1,000,000 pieces.