An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

The underground sanctuary of a mysterious ancient cult.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A Nesting Doll of Churches.

An alchemist's "magic door" stands in the middle of a Roman park.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

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.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

The once highest point in China blends symbolic design with a kick of adrenaline.

A faithful reproduction of Al-Jazari's enormous water clock.

Singapore's landscaping project is home to 18 incredible Supertrees.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

This chimerical bridge/tunnel appears to dead end right into the sea.

Copenhagen's celebrated theme park and gardens.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Home to three historic ships from the age of Vikings.