One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This town is home to the world’s largest arch constructed entirely of elk antlers.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

The second tallest railway trestle bridge in America.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A giant toy jack made of numerous welded-together fire hydrants.

Cryptid lake monster honored with its own monument.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

One car at a time please.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A legendary boxing venue and ring featured in Rocky V.

The abandoned coal loading dock is a canvas for unsanctioned art.

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

World's first "penitentiary," meant to be humane, drove men insane.

An eccentric playboy's astounding natural history collection.