This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

It's clear this abandoned Art Deco gem was no ordinary cleaners.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

Look closely and you’ll notice that the color changes a third of the way up the tower.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

The rogue roots are gradually consuming some of the historic marble grave markers.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

Stairs often replace streets on the steep slopes of this old mining town.

The world’s largest collection of angel figurines includes 600 black angels donated by Oprah Winfrey.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

The birthplace of a titan of American cinema.

Statue dedicated to the star of an old television show.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

A bypass decorated with large wooden troll carvings.