Trajan's Forum was the greatest of the Roman imperial fora. It was the work of the architect Apollodorus of Damascus.
Citation:
Bouchard, Elsa. "Dedication of the forum Traiani (Trajan's Forum)".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11453, accessed 22 May 2013.]