Bannalpsee is a beautiful hidden gem located in the canton of Nidwalden. It is accessible by car or public transportation. The best time to visit Bannalpsee is from May to October. To get to the lake you can take either the Fell–Chrüzhütte Bannalp cable car or the Fellboden–Bannalpsee cable car. Info available here. From either location you will be able to experience the stunning views that Bannalpsee has to offer. If you're up for a hike it is a challenging one, starting in Fellboden, with elevation gain 745m, 5.3km of the length - one way (2h19min).