Sophisticated and cultured, Portugal’s capital city undulates over hills where the Tagus River flows into the Atlantic Ocean. Lisbon’s abundant treasures include world-class museums, palaces, Moorish castles, and religious structures. Grand plazas and hip neighborhoods like Santos, Lisbon’s revitalized waterside community. Visit the iconic hilltop St. George’s Castle, People watch at Rossio Square. Shop at Lisbon’s famous Mercado da Ribeira, and ride a cable car up to Bairro Alto, Lisbon’s top nightlife destination.