"He also finished the excavations at Baalbek in Lebanon and published the results." (Wiki) "Baalbek : Ergebnisse der Ausgrabungen und Untersuchungen in den Jahren" 1898 bis 1905, (as editor)

In 1894 he worked under Wilhelm Dörpfeld at the excavation of the Athenian Acropolis. (Wiki). Published "Die archaische Poros-Architektur der Akropolis zu Athen", German Academy of Sciences in Berlin, 1904

The Heraion "the full extent of the third temple's foundations were not revealed until Theodor Wiegand's campaign of 1910-14" (Wiki)

"He discovered, in 1927, the arsenals of the castle at the acropolis and excavated the large sanctuary of Asklepios outside the city." (Wiki). Published "Bericht über die Ausgrabungen in Pergamon" 1927, Berlin

Director of Antiquities on Berlin (1912-30) at the time of building of the Pergamon Museum