More troubling, Pete, is that the Lazarus building is gone. I used to go down there and look at the Christmas window displays, back when I was a kid (in the 60s). Another icon of childhood memories, gone.
You are right about the photos - we need to make sure they accurately represent what is there, as the images may be very old. Also, I looked at downtown Houston tonight, and the photo was not taken from directly above the downtown area. You cannot see the streets in the area, as the buildings shield all the streets. The satellite image is worthless for pre-measuring a course through downtown Houston.