From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

A gorgeous gem on the ocean.

A beautiful waterway tucked in the corner of a power plant.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

Only a shrine remains at the site of the catastrophic nightclub inferno that killed 100 Great White fans.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

An homage to everyone's favorite prehistoric cartoon family.

The highest bridge in America was built for an almost unnervingly small amount of money.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The Grand Canyon of Texas.

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

Home of the International Space Hall of Fame.

A Prada store in the West Texas desert that is never open for business.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This massive solar system model is sprawled out across Maine's suburban wilderness.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.