The Library Tower (AKA the U.S. Bank Tower) in Los Angeles could soon be the second tallest building west of the Mississippi thanks to San Francisco's proposed Transbay Terminal. While the Library Tower, located in downtown Los Angeles, stands at an alluring 1,018-feet tall, the Transbay Terminal is primed to win the measuring contest at 1,200-feet. You know, we're just saying. Not to brag or anything. Anyway, our tallest skyscrapers so far are as......