A Christian monastery stands on what was once a holy Incan temple.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A museum dedicated to the German scientist who revealed the significance of the mysterious Peruvian Nazca Lines.

Only the original archway remains from the building where a false cry of "fire" started a panic that claimed more than 70 lives on Christmas Eve in 1913.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

The largest airborne operation in history was launched to capture this bridge.

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.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

The oldest garden in Prague, once part of an medieval orchard.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

This one-room schoolhouse played a significant role in the education of Black children for almost 100 years.

A historic cemetery filled with quirky faux wood art and unique tombstones.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Beer lover's can-covered house.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

Avoid gangster interaction while window-shopping.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.