Northern Spain (the "Green Spain" regions of Galicia, Asturias, Cantabria, and the Basque Country) is widely considered highly underrated compared to the overcrowded Mediterranean coast. While 2026 is seeing a massive tourism boom in Spain, the north remains a "hidden gem" for those seeking dramatic Atlantic cliffs, emerald-green mountains, and world-class gastronomy without the "over-tourism" of Barcelona or Madrid. Destinations like San Sebastián (famous for its Michelin stars) and Santiago de Compostela (the end of the Camino) are gaining popularity, but the rugged Picos de Europa mountains and the quiet beaches of the Costa da Morte still offer an authentic, tranquil experience. The cooler, temperate climate is also becoming increasingly attractive to travelers looking to escape the extreme heatwaves of Southern Europe, making Northern Spain a top-tier choice for the "smart traveler" in 2026.