While it has deep cultural roots, most people know Guernica for a horrific event in the years leading up to WWII. Picasso's mural, considered by many the greatest antiwar work of art ever, tells the story. (The mural is now located in Museo Reina Sofia, Madrid, Spain.) For more information on the Rick Steves' Europe TV series — including episode descriptions, scripts, participating stations, travel information on destinations and more — visit www.ricksteves.com.