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Tree houses for grown upsBased in the heart of the Sierra del Montseny, just outside Barcelona, Cabanas als arbres is an ecological haven where childhood treetop fantasies are brought to life. Surrounded by the beautiful Forest of The Guilleries, it offers nature-loving guests to spend the night in one of ten bespoke tree houses. It has an ecological commitment, so that means no electricity or running water, but all guests have access to The Vileta, a traditional fourteenth-century country house which has showers, a bar and swimming pool. You can become Mogli for the day, feeling part of the ecosystem to appreciate the charm of its surroundings in your very own nest.