For those craving rugged adventure, Picos de Europa National Park in northern Spain showcases some of the most stunning mountain scenery in the country. With its dramatic peaks, deep gorges, and lush valleys, this park is a must-visit. The park features various trails that cater to all abilities, including the popular Cares Gorge Trail. This 12-kilometer (7.5 miles) route takes you through breathtaking landscapes and offers phenomenal views of the surrounding mountains.