http://commons.pelagios.org/

(old blog) http://pelagios-project.blogspot.nl/

PELAGIOS aims to help introduce Linked Open Data into online resources that refer to places in the historic past. Pelagios is a collective of projects connected by a shared vision of a world in which the geography of the past is every bit as interconnected, interactive and interesting as the present. It is committed to open access and a pragmatic lightweight approach that encourages and enables others to join us in putting the past online.