This single room has survived the centuries with almost no deterioration.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Yemen's "Stone Palace" looks like it was carved right out of the tall stone column on which it is built.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

A city built from mud and known as the "Manhattan of the desert."

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Something's watching you.

An eerie collection of the surviving structures from a past celebration of the future.

The oldest housing complex in Riga is a mini timeline of architectural trends.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

Climb inside an iron crystal magnified 165 billion times its normal size.