Picos de Europa is a truly stunning natural park that everyone should visit. It lies between the three Spanish states of Asturias, Castilla y Leon, and Cantabria, and has really spectacular scenery and wildlife.
The park has numerous mountains with varying degrees of difficulty, so it's a perfect place for hikers of all abilities. You can visit Picos de Europa at any time of year, as it has a different charm depending on the season. In winter, for example, you can hike through the mountains all covered in snow (taking the necessary precautions, of course), while in the spring and fall the landscape is filled with gorgeous colors. Or, you can visit in summer to simply enjoy the beautiful weather.