San Diego Zoo (San Diego, CA)
My second visit to one of the best zoos in the nation (if not the best). It takes a full day to see it all (and I'm still not sure we did). That darn reptile house will continue to give me food for nightmares for years to come (again). [rattlesnakes are as scared of you as you are of them...doubtful...but I'll keep saying it anyway]