Hit Sadie's Restaurant for some delicious authentic Mexican food. Old Town is worth checking out. I'm jinxed with the Tram (I've ridden it three times, and been stuck at the top all three times, weather twice, mechanical failure once, and no, it's not unreliable, it just doesn't like me). The National Atomic Museum also gets a vote. Breakfast at the Frontier Restaurant on Central Avenue (and take the time to drive the entire length of Central Avenue if you get the chance, it's one of the last pieces of Route 66 left). The Natural History Museum is worth a stop.