LODLAM 2013 Challenge Entry Maphub

Watch the video: http://vimeo.com/54776593#
This is mighty cool! By the same guys at AIT who did the Europeana Thinklab image/maps annotator demo.
I love the projection of historic maps onto google maps and google earth (after you add just 3 control points). Even shows them with varying opacity.
Cross-linking to dbPedia lets you search in any language.