A Beaux-Arts triumph set to become Ford's innovation campus

Golden Gate Park's historic collection of plants.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Go inside to really appreciate this 500-year-old technological masterpiece.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The hallucinogenic center of the ancient world.

This legendary city has been a tourist attraction for centuries.

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.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

Macabre astrological automaton clock dating to the late 1400s.

Oriental bazaar in the heart of Sarajevo.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

What once sat in the world’s spotlight is today a largely disused ghost complex.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

Version of the French Riviera destroyed by the sea.

The ghostly remains of an accidental sea.

Along a California highway is a kind of Jurassic Park made of metal.