[4] The Neo-baroque embassy building at Boltzmanngasse 16 was constructed from 1902 to 1904 according to plans designed by architect Ludwig Baumann.

Akademie für Orientalische Sprachen, which had been established in 1754 (the precursor of the present-day Diplomatic Academy of Vienna).

The studying conditions were severely restricted after the Austrian Anschluss to Nazi Germany, and the building was temporarily used as a Wehrmacht military hospital.

The U.S. Government finally purchased the building on June 30, 1947, at the intercession of Eleanor Lansing Dulles and with the consent of the Austrian National Council.

The U.S. Mission in Austria held the status of a legation from 1947 until 1951, when it officially became an embassy, with Walter J. Donnelly as the first U.S. ambassador to serve in Vienna since Frederic Courtland Penfield departed in World War I.