Portrait of Augustus as Pontifex Maximus
*Portrait of Augustus from Prima Porta, c. 20 b.c.
    Compare the Doryphoros by Polycleitos, 5th century b.c.

Portrait of Livia, late 1st century b.c., early 1st century a.d.
Portrait of Agrippa

Mausoleum of Augustus, 27 b.c.
*Theater of Marcellus, 17-13 b.c.
Plan of the Forums of Rome
*Forum of Augustus, 14-2 b.c.

Pont du Gard near Nimes, 1st century b.c.   
Maison Carée, Nimes, 24-16 b.c.  

Triumphal Arch of Augustus, Susa in northern Italy, 2 b.c.
 

*Ara Pacis of Augustus, 13-9 b.c.   For the Ara Pacis
 Compare the Parthenon Frieze, classical Greece, 5th century b.c.

Gemmea Augustea, c. 10 a.d.

Augustan Painting
House of Augustus on the Palatine, c. 40-30 b.c., "Second Style"
*House of Livia on the Palatine, end of 1st century, "Second Style"
*Garden Painting from the Villa of Livia at Primaporta, c. 20 b.c.
Wall painting from a villa near the Farnesina, c. 20 b.c.
Stucco relief from a villa near the Farnesina, late 1st century b.c.

See the excellent web page  Augustus Images of Power by Mark Morford at UVA