hiː ɪz mˈoʊst fˈeɪməs fɔːɹ hɪz tˈuːvˈɑːljuːm stˈʌdi ʌv ɹˈoʊmən təpˈɑːɡɹəfi, tˈɑːpəɡɹˌæfi dˈɛɹ stˈæt ɹˈɑːm ˈɪm ˈɔltɚθəm.
He is most famous for his two-volume study of Roman topography, Topographie der Stadt Rom im Alterthum.