A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

When beetles destroyed these trees, they found new life as fantasy sculptures.

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

This abandoned boat was left in place thanks to its rotting beauty.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

An adorably sweet display of sculpted Precious Moments figurines.

Site of the 1926 murder trial of Ernest Burkhart who was involved in the "Reign of Terror."

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

A larger-than-life monument to the overlooked women who braved Western expansion and broke down societal barriers.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

The oldest continuously occupied public building in the United States.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

Legends surround this jagged rock formation in the New Mexico desert.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

This crumbling stump is all that remains of what was once thought to be the oldest living organism.