Was messing around in Photoshop last night and (tried) to add renders of 300 Main + the Hemisfair tower/hotel into a pic i shot a few years ago from the Zoo garage. Not sure how accurate the scale is, but it gives an idea, especially the gap between Rivercenter and the rest of Downtown.
Just for fun added some more buildings in this one. A "signature" tower and some residential buildings around the Travis Park area, Greyhound station/the lots around it and the 1603 Broadway site.