The National Museum holds lots of old time things of the Cayman Islands. Mostly of its traditions and culture. Here is a picture of it below on the outside of it.
Here is the inside of it. This is one fun place and it is free when you go there on Saturday. The things that you see will be underwater and you will see lots and lots of fish and sharks, it will be very cool! It looks like a tube cut in half.
You have got to try out one of the wave-runners (which we sometimes call jet skis), but make sure that if you are out in the deep, deep, waters come in before 6:00 pm because sharks sometimes could be looking for LUNCH!!! Also make sure that you are with an adult or someone responsible.
I can tell you that you need to come to Cayman to see Stingray City. But don't worry about been bitten or anything like that, these Stingrays are tamed.