A large camera obscura, constructed entirely from digitally fabricated components.

This woodland architectural installation acts as a camera obscura for the heavens.

Whether you're up or down, the Elevator Museum is worth a stop.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The crumbling remains of a 19th century fortess.

A snapshot of the city's fascinating voodoo culture.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

These eclectic homes nestled into the cliffs of a Caribbean island were built entirely from scavenged materials.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.