This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

A chessmaster's dream destination.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

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

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Despite a recent paint job, the factory still sits empty.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

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

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

A mysterious stone embedded at the base of a historic Boston building.