Three plaques mark the spot where the "forgotten father of broadcasting" worked.

This institution celebrates the happy accidents of uncommon sticktoitiveness.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

A ruined Maya city that suffered a years-long case of mistaken identity.

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

Largest display of Wesleyana anywhere in the world.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

During the holidays, a vintage subway train whisks New Yorkers back in time.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A towering Art Deco movie palace made to look like a Mayan temple.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

This small-town park in southern Illinois has a 1,000,000-gallon swimming pool and a 100,000-barrel oil well.

The park that the Chicago Stockyards built.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

One extremely determined man's homemade universe.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

This punny mirror of another Wisconsin attraction is exactly what it sounds like.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

A clear blue swimming hole with hidden caves, still unexplored.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.