That entrance? Officially known as the Portico Tejas? It's a recessed semi-circle with five double doorways, each made of bronze frames and glass panes that are slightly curved to create a perfectly continuous arc.
Curved. They're curved. Go ahead and try to pull both doors towards you at once. You can't do it. Because they're curved.
Matt Nix is right: "'Fair Park makes it possible to put so much more awesomeness on the screen it's not even funny.'"