Brian posted a picture of the Trammell Crow building in Dallas on Saturday. My choice of downtown building is the JP Morgan Chase building. Its the 4th tallest building in Dallas and just a bit taller than the Crow building.
Growing up I always wanted to live in a de-lux apartment in the sky (if you get the reference, you are old). As I got older, the more I wanted to be away from the big city. It is neat to visit and take pictures, but that's about it for me.