On the island of Læsø out in the Kattegat, you can access large stretches of untouched nature and the island is almost entirely circled by wide beaches, with seal colonies and other wildlife.
For a relatively small island, Bornholm has quite a variety of geography and ecosystems. In the north you'll find rocky beaches and stunning cliffs. In the south are beaches with sandy so fine that the sand was once used in hour glasses. In between you have forests, caves, fields, and more. Off the coast you'll find the historic islands if Christiansø and Frederiksø. All of these waiting to be explored.