Ernst Emil Herzfeld (1879–1948) in Persepolis – The Metropolitan Museum of Art https://www.metmuseum.org/essays/ernst-emil-herzfeld-1879-1948-in-persepolis
Along with his studies at the Islamic city of Samarra, [Herzfeld’s] research at Persepolis is the best known work of his career.
The Gate of All Nations, a particularly ornate example commissioned by Xerxes I (
