Human figures and faces are carved into the sandstone surrounding this cave in Czechia.

The statue of a cursed knight is said to come to life every 100 years.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

Dedicated to the unsung history of human waste.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

This spooky statue sits outside a famous Prague theater.

A church of bones, decorated with 40,000 human skeletons.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

The world's newest astronomical clock is also its most accurate.

San Diego's most historic and haunted home.

A futuristic-looking beach house built for the owner of a snack food brand.

A statue based on a tragic Japanese nursery rhyme, commemorating San Diego's sisterhood with Yokohama.

Get fishing gear and craft beer at this restaurant on the pier.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

This painted Lego bridge is the product of over a century of locomotive history.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

San Francisco's first World's Fair, dedicated to the wonders of California.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.