We truly saved the best for last on our European itinerary. After a very long day of train travel we arrived in Lucerne, Switzerland, which might just be the greatest place on Earth. Honestly, wandering the pristine cobblestone streets and pastel medieval buildings seemed a little too good to be real. The highlight of our stay in this quaint city was a boat ride down Lake Lucerne that provided the most spectacular views of the snowcapped mountains and glacier-melt waters, which introduced me to a shade of deep blue I didn't know existed. I may have left my heart in Switzerland.