15 cities you have to visit at least once, according to travelers
6. ROME, ITALY — Rome is home to the world's largest cathedral, St. Peter's Basilica. While the Colosseum, the Trevi Fountain, and Michelangelo's Sistine Chapel are all essential to see, the Eternal City also boasts delicious restaurants with fresh dishes and quality house wines.
15 cities you have to visit at least once, according to travelers
14. BARCELONA, SPAIN — Unique architecture and exquisite cuisine collide in Catalonia's capital. Antoni Gaudí's signature designs, which include Parc Guell and La Sagrada Familia, are splattered around the city. Relish in tapas and paella by day, and then switch to sangria and experience the lively nightlife.