Barcelona is a city on the northeastern coast of Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second-most populous municipality of Spain after Madrid. With a population of 1.7 million within city limits, its urban area extends to numerous neighbouring municipalities within the province of Barcelona and is home to around 5.7 million people, making it the fifth most populous urban area of the European Union after Paris, the Ruhr area, Madrid, and Milan. It is one of the largest metropolises on the Mediterranean Sea, located on the coast between the mouths of the rivers Llobregat and Besòs, and bounded to the west by the Serra de Collserola mountain range.

Cagliari is a municipality and the capital and largest city of the island of Sardinia, an autonomous region of Italy. It has about 145,981 inhabitants, while its metropolitan city, including 69 other nearby municipalities, has about 536,245 inhabitants. According to Eurostat, the population of the functional urban area, the commuting zone of Cagliari, rises to 476,975. Cagliari is the 27th largest city in Italy.

Naples is the regional capital of Campania, southern Italy. With a population of 905,050 within the city's administrative limits as of 2026, it is the largest city in southern Italy and the third-largest city in Italy after Rome and Milan, while its province-level municipality is the third most populous metropolitan city in Italy with a population of 2,954,847 residents – or the second largest according to OECD data. Its metropolitan area, the seventh most populous in the European Union, has a population of approximately 4.4 million and stretches beyond the boundaries of the city proper for approximately 30 kilometres. Naples also plays a key role in international diplomacy, being home to NATO's Allied Joint Force Command Naples and the Parliamentary Assembly of the Mediterranean.

Civitavecchia é uma cidade pequena localizada na costa do Mar Tirreno, na região de Lácio - cerca de 1h30min de distância de Roma, utilizando trem como meio de transporte. Possui o…

O Mediterrâneo une paisagens deslumbrantes da Europa, história fascinante e ilhas inesquecíveis banhadas pelo mar azul.