The fairy tale castle of the "fairy-tale king."

A garden of flying flowers.

A small but immensely extravagant palace built by the "Night King."

The beautiful baroque library of the Hapsburg empire.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Medicinal spa created with the discharge from a geothermal energy plant.

A fifth-century temple improbably built into the side of a cliff.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

9th century Abbasid mosque, damaged in modern warfare.

Stalin's march toward a more modern USSR flooded a monastery, leaving a unique and extravagant nautical marker, "The Flooded Belfry."

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Display that gathers the basic elements of the universe in one convenient location.

In memory of The Blur Building, the temporary exhibition pavilion of vaporous nothingness.

A monument celebrating the idea of reaching inaccessible places.

Three bridges straddle a stream, one stacked upon the other.

A fake medieval village in the middle of Turin.

An octagonal folly tower overlooking the sea.

A clear example of the process of erosion in action.

Geothermal waterfalls in Tuscany.

A hundred and twenty year old twelve story lighthouse located on a beautiful Indonesian island.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

Cozy basement bar sports an inventory of over 2,000 beers.

Catacombs turned marketplace.

Secret refuge and museum of the Duke of Florence.