This historic national park is covered in the stunning ruins of red rock pueblos.

Unusual finds in this shrine to local law enforcement include a 19th-century vampire-slaying kit.

The California capital city once stood 10 feet lower than it does today.

One of the most controversial statues in Romania is an emperor with no clothes.

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

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Twice a day, the water of the Petitcodiac River flows upstream in a surfable wave.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

The world's longest covered bridge is a quaint and incredible wooden tunnel.

A mysterious spot where the laws of gravity seem not to apply.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Stroll through a wonderland of stupendous moss-covered trees.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Odd outsider art installations surround a Gold Rush-era ghost town.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

The legendary building that needed ghostly approval before being built.