A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A strange house built only at night, with rumored mystic inspiration.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

Something's watching you.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

A medieval church built up to defend its village.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

A celebration of all things tacky, garish, and bizarrely creative in the Romanian capital.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Single runway interrupted by a busy road that cuts across its middle.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

The oldest known university in the world is in Fez, Morocco.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Traditional 11th-century outdoor tannery.

The other side is actually green.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.