Places meltingknight Wants to Go

This picturesque castle in Poland has a rich history, including a legend that ties it to lost Incan treasures.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

A subterranean Holocaust refuge within one of the world's longest cave systems.

A beautiful 62-acre Catholic shrine and botanical garden.

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

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

A submerged archeological park still holds the wonders of a Roman Sodom.

A tree that defies gravity grows in an ancient ruin.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

This rock resembling a turned-up boot has become the symbol of St. Ingbert.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

A controversial blue hoop has been puzzling freeway drivers since 2013.

With print dying, this local paper keeps the lights on by doubling as a stunning cafe and cocktail bar.

This air raid shelter from the Spanish Civil War is now a museum dedicated to the history of the city's bombardment.

During its heyday, 72 one-ton buckets from this dredge bore into the Powder River excavating vast gold deposits.

A seaside castle complex that stood through centuries of conquests.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

These whimsical works of art tell the story of the city's past and present.

What may be Boston's finest Art Deco building, located in the city's Financial District.

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

Flip your own pancakes in this old sugar mill within a Florida state park.