One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

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

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Less a museum than a bizarre fantasy world created by artists and engineers.

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

A lush green oasis in the middle of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

The only arched bridge made of stone on the entire Mississippi River.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

The absurd creation is a compulsory destination for selfies in Buffalo.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.