A huge musical instrument played by the ocean.

The restored ferry is now a dockside museum and a unique bed and breakfast.

Easily overlooked in favor of the wineries that dot the region, this blast from the past is equally worth the visit.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

A Northwoods sporting competition that shows lumber jacks doing much more than cutting down trees.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

The world's largest wooden structure.

A little-known hot spring haven right below the highway.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Just below the surface, shrimp are producing temperatures hotter than the sun.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Visit these gentle, bell-bottomed, exquisite equines at the home of North America's first Gypsy Vanner horses.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.