Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Ohio's 19th-century communist micro-society.

A grandiose title could not save this mercantile community from obscurity.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

"Where the ducks walk on fish."

Where the oil industry began.

Memorializing an American tragedy of massive proportions.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

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

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

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A toxic ghost town sitting atop a massive coal fire.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

The city is full of whimsical portals to another world.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Enormous lake at the bottom of a unique cave system.

Live long and prosper in Tennessee.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

After just one epic test blast, this literal loose cannon proved too explosive for combat.