An urban laboratory.

This former stomping grounds of the most eminent astronomers of the early 20th century.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A castle that was built stone by stone by an eccentric journalist.

America's most famous piece of self-built architecture.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.