Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
LOT Network - Help eliminate the patent troll threat
Altamira - Altamira is a communal marketplace for art, artists, and their fans...
Pure CSS Francine - HTML/CSS portrait in the style of an 18th century painting
Google Cultural Institute - Explore art, landmarks and exhibitions from around the world
Trea - Visualizing patent families.