I have never heard about Atlantis here on HP, if it still exists i would like to know where it is so i can visit

It would be cool to visit something that already exists, but i never heard about. It can also be funny to make an second Atlantis in member area 4. If nobody wants to build it i can maybe do it, but then we have an Atlantis kinda easy to find, just visit member area 4. Or ask somebody to guide you there etc.
....or, does it have to be like in real life: people don't know sure if it exists or not. Some people believe Atlantis exists, other people don't.