Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

The highway's southernmost spot is a beloved local attraction.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Toxic waste disaster that founded the Superfund program.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

A 19th-century architectural wonder designed by the "father of the skyscraper."

This restored house is like a time capsule of the president's unconventional inauguration.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

The seat of Buffalo government is a gorgeous Art Deco palace.

Buffalo's abandoned concrete grain elevators are getting a second life.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A lion given to the prime minister somehow got stuffed and sent to Florida.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

Intertwined, interspecies trees which locals believe can grant boons to lovers.