Inside this shop, visitors are treated to a unique blend of natural history and art.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This plaque marks the former home of one of the first women physicians in the Netherlands.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A unique work of automotive art calls this shopping center home.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

The last of Amsterdam's original sea level markers remaining in place.

A floating cat sanctuary on an Amsterdam canal.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Copenhagen's celebrated theme park and gardens.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Taiwan's last Chinese character letterpress preserves the dying art of Chinese character mold making.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

Dedicated to the neverending mathematical constant, this plaque next to a park bench was sponsored by an anonymous benefactor.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

It took 275 years and four burials to finally put the Mayflower’s most famous passenger to rest.