When Gunnebo Castle was completed in 1796, it was one of the country's most lavish mansions, with architecture and decoration inspired by the latest developments on the continent. The architecture followed different models than the more studied Stockholm-based architecture. The decoration followed an artistic program, carried out between 1786 and 1796 by the architect Carl Wilhelm Carlberg and the Italian sculptor Gioacchino Frulli, and constitutes one of the most significant decorative cycles of the second half of the 18th century in Sweden. Gunnebo's architect C.W. Carlberg developed an independent design language in relation to the architects in Stockholm - but who were Carlberg's role models? Ever since the Renaissance, complex iconographic programs - celebrating the political, economic and intellectual ambitions of the client - formed the basis of a building's decoration. These programs were developed in collaboration between the client and his advisors, of which Gunnebo is a lavish example - but what was Gunnebo's artistic program? Despite its importance, the background to one of the most prominent Swedish buildings of the 18th century remains largely unexplored. The aim of the project is to describe and analyze the architectural history of Gunnebo and the artistic program behind its decorations based on an iconological and comparative study of contemporary developments in Europe. The study will culminate in a monograph. The ambition is to publish a richly illustrated volume to increase knowledge of the site and its value.