This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

Countless grotesque faces stare out from this eerie Prague art wall.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Monument to a suicide protesting the Soviet invasion.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

One of Amsterdam's narrowest houses is located right across the canal from its widest.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A Hungarian optometrist's charming collection of Asian art and curiosities.

The record holder for the world’s largest peach.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

The 15-foot-wide, 2-ton pan fries hundreds of chickens once a year.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

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.

A local landmark with generations of spraypainted messages, and more being added each day.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

The world-record holder for the longest bridge stretching continuously over water.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.