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

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

137 graves holding New England's earliest residents.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A collection of 20th-century automata, penny arcade games, and musical contraptions.