The last masonry skyscraper ever built reveals a transitional moment in architectural history.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

This downtown Dallas art installation is always on the lookout.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A Memphis park where you can walk the whole Mississippi River in one go.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

This outdoor exhibit features a historic wooden dam once used to help boats navigate the Ohio River.

Home to several unusual artifacts, including a huge painting of George Washington.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

The site of the one and only battle of Lord Dunmore's War.

The failure of one component toppled this entire bridge during rush hour.

The largest earthwork effigy in the world.

This huge clock made of flowers and simple machinery was once used a political weapon.

Unique tower has outlasted a takeover of the company.

A full-scale replica of a 1774 colonial settlement in Kentucky.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

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

The secret city built by the Manhattan Project.

One person’s lost luggage is another person’s treasure.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A cemetery for only coon hounds in northwest Alabama.