A perfect circle of 24 mysterious holes dates back to prehistoric times.

The highway's southernmost spot is a beloved local attraction.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The world's second largest single-dish radio telescope, once used to contact E.T.

Children's playground hidden under a big pink and blue cap.

This copper-coated, multi-arched dome is surrounded by a moat and lights up at night.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

It's home to the antenna that received the first images of Neil Armstrong walking on the moon.

This roadside attraction became locally famous for its unintentionally phallic shape.

Dozens of large-scale, creative, evocative curios from prominent artists dot the calm outdoor space around this major museum.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

This dramatic rail curve was once the target of a failed Nazi attack.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The large collection of pre-Columbian pottery might make you blush.

This tremendous timepiece was once the largest cuckoo clock in the world.

The final resting place of the famed German pilot, the "Red Baron."

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.