See the highlights of northern Switzerland on this guided day trip from Lucerne. Start off shopping for treats with a stop at the Lindt & Sprüngli chocolate shop. Head to Zurich for an introductory city tour, where you'll see the Old Town, University Quarter, and the impressive train station. Then travel north to Laufen Castle, overlooking the Rhine Falls. Take in panoramic views of Europe's largest waterfall before continuing to Stein am Rhein to see the town's fresco-covered houses and Old Town. Finish the day with transportation back to Lucerne.