To celebrate the season, I’m sharing clips, extras, and behind-the-scenes notes from my classic one-hour special, “Rick Steves’ European Christmas” — and when it comes to traditional holiday images, Germany’s Bavaria is the heartland. In this clip, we savor classic holiday themes: glittering trees, old-time carols, and colorful Christmas markets. Even though I was determined to limit the shopping focus in the show, I couldn’t help but be impressed by Germany’s grandest Christmas market, in Nürnb