Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This ghost town was once a cult-like religious utopian settlement.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

A sculpture for the sun and stars, created by Nancy Holt.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Dig for your own trilobites in this goldmine of invertebrates.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The largest outdoor art gallery in the Northwest United States.

San Francisco's newly reopened hands-on science museum.

Olfactory delights in San Francisco's Botanical Gardens.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

An American ghost town hides along a side street in Scotland's capital.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.