In the spring of 1826, the young Danish naval officer Carl Irminger and two of his friends sailed with a cargo ship from Copenhagen to Iceland to stay there during the summer. This article is based on Irminger’s unpublished travel diary. Irminger and his friends blended in with the local elite, which provided them with equipment and contacts to travel. Their journeys out from Reykjavik were adventurous and depended on local guides and the hospitality of residents along the way. The tales of hardships during the travels, combined with contacts established during the trip, became important credentials in Irminger’s future career. He was hired as an adjutant to the Danish prince, and the narrative of his summer in Iceland ignited a royal expedition there in 1834, of which Irminger was to be the trip leader. Irminger’s diary reflects a broader shift from Enlightenment exploration reporting into Romantic travel writing, with more emotional and aesthetic emphasis. His journey was a forerunner of the nature tourism that eventually was to sprout in Iceland.