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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

Infamous and now demolished panopticon prison built by its former inhabitants.

Once a resting spot for King Fernando VII.

The remains of this misplaced church were moved here stone by stone.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

An ice cream parlor chain that caters to vegans and pinball fans equally.

This legendary urban waterfall creates a dazzling display of rainbows.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This black shoreline is made up of exploded lava particles.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The decorations were inspired by an unlikely missing treasure.

A bust of the first president welcomes visitors to the only town in America called George, Washington.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

This playground sculpture of an icon from the past is dedicated to the children of the future.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.