Abildgaard traveled throughout Denmark in order to create drawings of its tombstones, runes and other historic monuments. In 1753–54 he was an illustrator and painter on historian Jacob Langebek's tour to Sweden and the Baltic provinces.[1] He is also remembered for his studies of topographical and geological conditions and phenomena.[2]
In 1759 he published the first geological account of the chert and fossil bearing chalk beds at Stevns Klint on the Danish island of Zealand, Beskrivelse over Stevens Klint og dens naturlige Mærkværdigheder. His other works include Physisk-mineralogisk Beskrivelse over Möens klint (Physical and mineralogical description of Møns Klint; 1781) and a treatise on peat, titled Afhandling om Tørv (1765).[3]