Abstract This article focuses on overlooked aspects of German colonization in southern Chile by examining the treatise Auswanderung und deutsch-nationale Kolonisation von Süd-Amerika mit besonderer Berücksichtigung des Freistaates Chile (Emigration and German National Colonization of South America with Special Attention to the Free State of Chile) by Carl Alexander Simon. Simon was a Romantic artist who advocated for overseas colonization and settled in Chile to promote his ideas. His treatise, which blended poetry and Romantic rhetoric with political ideas, aimed to encourage German occupation of Chile and South America based on the supposed physical and intellectual superiority of the Germans. This article argues that Simon’s work is integral to understanding the intersection of Romanticism and German colonialism in the nineteenth century and how racial and nationalistic sentiments fuelled German colonialism in remote corners of the world. Furthermore, it contributes to discussions on German nation-building overseas and the connections between German colonialism and race, the legacies of German colonialism, German colonial fantasies, and indigeneity and Germanness. Finally, this study of Simon’s work complements existing research on German settlements in Africa, Asia and the Pacific from 1850 onwards, highlighting the importance of considering the role of Germany in the global colonial project.