Cantabria is one of Spain's best-kept secrets. Tucked along the northern coast between Asturias and the Basque Country, it offers dramatic coastline, green mountains, and a refreshing absence of crowds. The Picos de Europa spill into its western edge, prehistoric cave art dots the hillsides, and the beaches rival anything on the Mediterranean — minus the package tourists.
The capital Santander has a gorgeous bay and elegant waterfront, while the coastal town of Comillas is home to one of Gaudí's lesser-known buildings. Inland, the valleys are lush and quiet, perfect for hiking and slow travel.