 These studies were summarized in Grimm's 12-volume "Monuments of Byzantine architecture in Georgia and Armenia" (1859–1856) and subsequent works.Grimm became a professor of the Institute of Civil Engineers in 1856 and at the Academy in 1859.In 1858 empress Maria Alexandrovna commissioned Grimm to design the cathedral in Chersonesos, on the site of a Greek church where Vladimir I of Kiev was baptized in 988.