In the 1970, the parents of Helga Voci (Diego’s wife), built a new house in Bavaria. Diego’s artistic involvement can be seen in the interior and exterior to this day.
Here is an image of the front door (along with a close up) designed and sculpted in copper by Diego. http://en.wikipedia.org/wiki/Antonio_Diego_Voci#Germany_-_Naffouj_and_Dahms_galleries
The inspiration of the design was of the Roman time period. Notice the Roman numbers across the middle of the door.
To be fascinated by Diego’s talents Google “Diego Voci” and click “images”.