Portugal is a southern European country on the Iberian Peninsula, bordering Spain. Its location on the Atlantic Ocean has influenced many aspects of its culture: salt cod and grilled sardines are national dishes, the Algarve's beaches are a major destination and much of the nation’s architecture dates to the 1500s–1800s, when Portugal had a powerful maritime empire. The territory of modern Portugal has been continuously settled, invaded and fought over since prehistoric times. Portugal is defined as a Mediterranean climate. The main tourist areas are, by order of importance, the Algarve, the Greater Lisbon (Lisboa), Greater Porto and Northern Portugal (Porto e Norte), city of Coimbra, Portuguese Islands (Ilhas Portuguesas: Madeira and Azores), and Alentejo. Today, most tourists in Portugal are Spanish, British, French, Dutch, Scandinavians or Brazilians, which not only search for beach vacations, but mostly cultural ones, city breaks, gastronomy, nautical tourism or business traveling.