Ubi Erat Lupa

http://www.ubi-erat-lupa.org/about.php

Ubi Erat Lupa (Lupa) is a non-commercial project intended for a broad audience. It has a picture database (www.ubi-erat-lupa.org of stone monuments) including sculptures, reliefs, inscriptions, architectural pieces etc. ranging from pre-history to around AD 500.

Printable images (300 dpi) are available without charge (subject to some restrictions explained on their website), and the project welcomes contributions from museums and collections.

As its inception was in Vienna, most project data relates to the mid- and south-eastern regions of europe.