Oulanka National Park, Finland

No matter what time of year you visit Oulanka, you’re sure to find some incredible scenery there to greet you. You’ll want to avoid visiting during the spring, when the park is prone to flooding, but in the summer, you’ll find jewel-bright greens. In the fall, on the other hand, the foliage will change over to brilliant orange and yellow hues. And in the winter, when everything is white, you’ll find that, far from being a harsh and forbidding landscape, Oulanka’s snow-covered trees and huts beckon you in to explore a special kind of solitude. The most popular trekking route in Finland (the 80-kilometer Karhunkierros Trail) lies within Oulanka’s borders, as do many other shorter routes, and if you’re lucky, you may even catch a glimpse of reindeer!