This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

The whole world in one water tank.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

This abandoned Victorian-style house was built in 1884.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

The land is home to swimming ponies and a legendary 18th-century treasure.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

This World's Fair showpiece was built in Chicago, but shipped to Maine.

An unsolved murder victim's grave which may or may not contain her body.

This architectural onion has an original 1930's Jerry O'Mahony dining car at its core.

This candy-striped tower is the farthest east you can go in the United States.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

The world's largest rotating world.

The most photographed house in Maine looks good enough to eat.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

A prime example of New Orleans' unique architecture these early 20th century homes were built to look like steamboats.

A house of courtship where the Jazz Age's most storied lovers got their start.