The gift shop has art stuff in it and there is a Coke machine right by it. After all that walking in the hot sun, I decided to buy a Diet Coke. They only have the drinks in bottles, which cost $1. I didn't have 4 quarters and it would not take any of my $1 bills. So I had to go into the gift shop and trade my $1 bill into 4 quarters. That Diet Coke was refreshing.