We drove around the Picos de Europa mountains, and we had fantastic views, but the Mirador del Fito was the most amazing. I would say it is one of the top things to do or see in Northern Spain, let alone Colunga. The Michelin Guide gives it 3 stars, the tops. We came up from Arriondas (road signs there are a little tricky, look for AS 260 just about a block or so from the great restaurant El Corral del Indianu, and head north). The road was pleasant, not scary like certain other mountain roads we took, with lots of trees and pastures on the side of the road until we got to the Mirador (scenic overlook). There is a good parking lot on the right (East) side of the road. The overlook provides great views of the mountains and even the seacoast.