Our lengthiest voyage into Northern Europe stretches from the heart of the Mediterranean into the deep-blue Baltic, visiting a dozen spectacular countries along the way. The initial highlights include Cadiz, gateway to Spain’s flamenco-loving Seville, and lively Oporto, where you might shop in the medieval quarter of Ribeira. Farther north, more cosmopolitan ports await you, including the capital cities of Amsterdam, its Van Gogh Museum is a must-see, and easy-to-walk Copenhagen. The voyage builds to a wonderful crescendo with two, unforgettable overnight stays. The first evening will be spent in St. Petersburg, the amazing city built by visionary Peter the Great just over 300 years ago. Enjoy another evening in Stockholm, Sweden’s environmentally friendly capital spread across an archipelago of 14 islands.