A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

This is one really big nut.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A museum dedicated to the alleged Roswell Incident.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

The land is home to swimming ponies and a legendary 18th-century treasure.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A semi-scholarly approach to sex.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

A musical instrument played by the sea.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Pompeii's less famous neighbor is still revealing her secrets.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.