The only Bahá'í house of worship in North America and one of only a handful worldwide.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

A historic lighthouse steeped in rumors of ghost and pirate stories.

A former connection to City Island, it has been abandoned since the 1930s.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

One of the oldest and tallest lighthouses still in service on Lake Michigan.

A six-story-tall golden pyramid, surrounded by a moat.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

This striking art museum holds an amazing series of curiosity cabinets.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

An upstate New York garage advertises its services by literally putting the automobile above all else.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

Amazing views of Long Island Sound can be seen from this mountaintop tower.

A once-booming railroad left abandoned next to the Quinnipiac River marshes now intersects with a hiking trail.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

This forlorn park is the result of a failed investment turned tax dodge.