The most alien-looking place on Earth.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

A sculpture for the sun and stars, created by Nancy Holt.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

The ghostly remains of an accidental sea.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

An isolated dive site teeming with cnidarians.