The horns on top are microwave antannas that are no longer used (I don't think). The microwave equipment were part of the old AT&T Long Lines system that carried "long distance" telephone taffic. The Long Lines system was also part of the "doomsday" communication system that would be called upon in event of nuclear war with the USSR. Most of the folks working on that system were security cleared, etc, and the system carried a lot of governmental traflfic. For instance when the president traveled, direct, secure lines of comm were carried on the system. Most likely atleast parts of that building are nuclear blast hardened, hence the small windows and complete lack of windows in places. I wouldn't be surprised if the windowless side faces the ship channel/baytown areas which would have been a likely nuclear target, but I can't remember which side it's on... A Google search on AT&T Long Lines brings up some neat pictures of mothballed facilities complete with nuclear decontamination equipment and supplies... Dave.