Porto (tours from Leixoes), Portugal
Porto is an enchanting, historic city with Roman ramparts and Parisian-style squares. But it's best known for its port wine - to which the city gave its name. The cathedral area is filled with many treasures, like the Renaissance church of Santa Clara and the densely populated quarter of Barredo, which hasn't changed since medieval times. The narrow streets of the riverside quarter of Ribeira are delightful and dotted with fashionable bars and restaurants overflowing with seafood.