Concerned that foreigners did not know his region well enough, he undertook the presentation of Carniola in words and pictures, installing a copperplate workshop at his Bogenšperk Castle near Litija and publishing collections of his work. Written in German, The Glory of the Duchy of Carniola was published in 1689 in 15 volumes, lavishly illustrated with 528 copperplate engravings. It is an encyclopedia of natural history, Slovene customs and folklore, history, and the topography of a region that makes up a large part of present-day Slovenia.