Signs of the (Retro) Times: Houston, TX
I am a huge font nerd — seriously, things like "just! look! at that typography!" come out of my mouth at regular intervals. Of course, my favorite fonts are retro-style; imagine my surprise and delight to discover a trove of them during a recent stay in downtown Houston.
I can't say I recommend Houston otherwise (though I hear there's a very nice art scene), but if you have to be there, keep your eyes open.