The highest point in Spain is actually not on the mainland, but on the island of Tenerife. Here the volcano Teide rises 3,718 m into the sky and is visible from all over the island - if the weather permits. Though Mt Teide last erupted in 1909, it's still active and minor earthquakes do happen. There are several roads leading up the volcano and it's possible to drive all the way up to 2,356 m, where a cable car can bring you further up to the upper station at 3,555 m (tickets can be prebooked online). The last 163 m you need to hike on foot (remember to book a hiking permit online). A large part of the volcano is a natural park and an UNESCO World Heritage Site, and offer some great hiking opportunities through the volcanic moonscape. Even if you don't want to hike, a road trip across the volcano will still give you amazing sights of the snow covered peak of Teide, along with other odd rock formations, in addition to panoramic views over the rest of Tenerife and the neighbouring Canary Islands.