I came across a marvelous site with 3D models of hundreds of buildings from around the world. Some of the Roman buildings included:
The Tomb of Caecilia Metella:
To walk through these models you need to download free software:
When I have some time to explore the software even more I hope to be able to use my photographs that I took in Italy in March to map detail onto the models I have downloaded. I have also contacted the coordinator for the site to see if they are interested in including my images in their collection. I would still control the copyright and I have granted free use for educational and non-commercial use.