This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

San Francisco’s condensed garden of incredible plant growth.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

A miniature view of the park, caught in time.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Images chiseled into the basalt here date back an estimated 300 years.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Where commuters walk through remnants of an ancient Greek necropolis.

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

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Taste freshly foraged yarrow and black locust blossoms at this ambitious cocktail bar.

These barriers stand as stark reminders of Northern Ireland's troubled past.

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

Malaysia's first interactive museum.

The oldest Jewish cemetery in Southeast Asia is a monument to a disappearing community.