Dura-Europos

The Romans erected walls similar to the above in several places along the "Limes" 

where the terrain or the ease of a break-through by barbarians, outside the borders of 

Roman lands, was most likely.  In other areas, towers were used.
Redrawn by Marcus Audens.

Lambaesis

Rome established this military fort in approximately AD 81.  It later served as army headquarters

in North Africa.

Redrawn by Marcus Audens.

Roman Ship-yard Dry-dock

Archaeologists have recently uncovered the remains of a sixty-foot
 high building, seen here in a reconstruction that functioned as a  ship
-yard for the drydocking and maintenance of Roman ships.

Traganic Basin

The East Under the Julio-Claudians

A Reconstruction of a Roman Legion Praetorium, 3rd Century

Typical Roman Army Fortified Camp (Vindolanda)