Porto, the city that gave Portugal its name, is known worldwide for its wine, bridges, and contemporary and ancient architecture. Its historical center, classified as a World Heritage Site by UNESCO, is a can’t-miss attraction. Spend a full day exploring the amazing monuments and landscapes of Porto on this guided cultural and heritage tour from Lisbon.   Start at Igreja e Clérigos Tower, built in the 18th century, a remarkable architectural complex. Visit the Lello bookstore, which has been recognized as one of the most beautiful bookstores in the world—its stunning dark wood and red velvet interior will amaze you. Head to the beautiful Sao Bento Railway Station to admire its 20,000 azulejo tiles. Visit the Porto Cathedral, a Roman Catholic church that is one of the oldest in the city.   Take lunch at Ribiera in the historic center of the city before visiting a wine cellar where the famous Port wine is made. Finally, enjoy a boat trip to see the 7 bridges that cross the water. After a day well spent, you’ll be returned to your hotel in Lisbon.