A 16th-century Andalusian palace.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

An ancient Egyptian temple in the middle of Madrid, Spain.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The magic's in the hole!

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The headquarters of the famous Yale society.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

Morocco's Argania trees are infested with nut-hungry goats.

Vast stretch of tide-pools with a unique Moroccan charm.

A naturally beautiful, seemingly bottomless deep blue spring.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

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