With the help of modern technology, Brian Unger travels back in time to present a sense of history not typically found in guidebooks. Amazing CGI graphics transport Unger -- an actor, comic and writer with credits including "It's Always Sunny in Philadelphia" and "The Daily Show" -- to San Francisco during the Depression, to Arizona during the Wild West days, to 1884 to learn about the U.S. Capitol's construction, and to "divorce ranches" in 1940s Las Vegas. Other iconic landmarks, personalities and events are covered in half-hour episodes, revealing historical, heretofore mysterious details