These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

Bioluminescent firefly squid light up this Japanese fishing port.

Australian Lake set aglow by Noctiluca Scintillans.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

These eerie outliers of the lightning bug family glow a mysterious blue color.

A glowing underwater cliff attracts marine life and divers in equal measure.

Once the path of a railway tunnel, now home to thousands of glowing insects.

The red crab exhibits one of the most spectacular migrations on earth, despite manmade obstacles.

The largest single concentration of harmless garter snakes in the world is a writhing Canadian serpent orgy.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

One of the first amphibian migration tunnels in the United States encourages a tradition that has inspired Amherst residents for decades.

Special tunnels built so that frogs won't be killed when crossing the highway.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

A Neolithic celestial calendar standing in a nondescript wheat field.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

A sophisticated astronomical tower built by one of the greatest Persian scholars of the Islamic Golden Age.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

One of the few places where you can explore a 1918 paddlewheel steamboat from stem to stern.

A giant ball made from pieces of an old Jeep.

A quirky collection of outsider art made from automobile parts.

A scalable map of Colombia with the bonus of a butterfly house.