Relics of the Old World -- grand cathedrals, imposing castles and lost-in-time medieval villages -- mingle with the modern across Europe. The Continent's celebrated cities offer endless cultural pursuits for the traveler looking to get lost in the arts, from peering at paintings by the Great Masters to dining on cuisine cooked by decidedly contemporary chefs. Beyond the cities, rural landscapes tempt travelers to flee the urban scene and breathe fresh air in Swiss mountains, rolling Irish hills or sun-soaked Tuscan valleys.