: The Basque language, Euskara , is a "language isolate," meaning it has no known relation to any other living language in the world. It is believed to predate the Roman Empire and remains a fierce symbol of Basque identity and nationalism .
: Home to the industrial-turned-artistic hub of Bilbao.
: Transformed by the Frank Gehry-designed Guggenheim Museum, this city blends gritty industrial history with avant-garde architecture.