There were several huge tanks very much accessable without having to pay anything, just walk down the stairs and walk along the wall to view all the fish. Tthere was a dark tunnel which you had to have tickets for which were the digs. I didn't pay the $29 to see anything. I just walked around and saw what I could see. Atlantis has a wonderful website which will give you a "tour" of what the "dig" is (a faux archelogical exhibition). I want to go stay at the Atlantis for a weekend so I can see more of the grounds, which appeared to be amazing but not accessable unless you were a guest.
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