This amazingly preserved Gold Rush town is a historian's dream.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

The only road through the heart of Glacier National Park.

A house carved into a rock in the 1940s.

A small flooded ghost town with a few scattered structures remaining.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Granting the right of way to ships over surface traffic since 1917.

A wall of chewing gum moonlights as collective art.

The magic's in the hole!

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

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

Civil War Fort on an island in the Boston Harbor.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

The world's largest piece of copyrighted artwork.

An enormous, inside-out glass globe built in 1935.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

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

Visitors to this library are in for a real-world education in modernist architecture.

Pyramid home to an obscure religious group that practices modern mummification.