We're pleased to announce the addition of Athens, Greece to the 3D Buildings layer in Google Earth. No trip to virtual Athens would be complete without a visit to the Parthenon. The architecture of the Parthenon is fascinating; all of its lines exhibit subtle curvature (the columns, for example, are slightly convex) in order to avoid the optical illusion of concavity resulting from parallel lines viewed at a distance. While you're on the Acropolis, duck over to the Herodeion Theater, where for almost two thousand years music and theater performances have been held -- check out its schedule during the Athens Festival.