The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

The highest bridge in America was built for an almost unnervingly small amount of money.

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

Elvis's own personal tropical hideaway.

The world's longest known cave system.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A house carved into a rock in the 1940s.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

See massive fossils that are over 200 million years old in northeastern Arizona.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A sharp bend in a dramatic river canyon cut through red rocks.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The wild west is still alive and well at this authentic mining town watering hole.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

A real flying saucer, contracted by the U.S. Air Force.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.