Today's Pantheon, the oldest large public building in use in the world, is the work of Hadrian (76 - 117 - 138 (62)), who rebuilt a 27BC south facaded structure erected by Augustus' contemporary and latterly son-in-law Marcus Vipsanius Agrippa ("M.Agrippa" - now that's a power name if ever there was one - that's him on the left in the Louvre Museum). Hadrian, the great builder Emperor, was nice enough to have Agrippa's name put on the new north facing facade.
Paris, France - This tower in La Defense business district is called Cheminee d'Aeration by Raymond Moretti. The tower sculpture is nearly 100 feet high and comprised of concrete and fiberglass. There are apparently 700 narrow, colorful fiberglass tubes surrounding the tower. Not an office building at all - apparently art hiding a ventilation shaft.