I think since 10 but I'm really not sure
What can I say the first time we went it was very nice my son had good time, the second time I was very disappointed because the water is recycled around one a clock the water was dirty and smelled very bad , and not only that there are some climbing towers and slides that are dangerous for little kids ,my son got sick because of the dirty water .to go back I don't think so,very disappointed.
And
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