Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

An ancient fortification lives on in this Chinese city.

The first KFC is on the National Register of Historic Places.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

The highest peak in the state of Vermont has some interesting features.

The longest enclosed pedestrian bridge in the world spans 14 lanes of traffic and six rail tracks, all while lighting up the night sky.

The secret city built by the Manhattan Project.

This half-ton piece of the Alps sits at the base of the CN Tower.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Toxic waste disaster that founded the Superfund program.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Moonbows over Kentucky.

The world's longest known cave system.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.