1 - Freud
This is a 40:1 scale replica of the interior of a womb. The temperature here is a very comfortable 37C (98.6F). The muffled steady repetitive thumping of your mother's heart can be heard. The middle of the womb is filled with bean bag mattresses and you are able to lie down, close your eyes and regress to your earliest existence. Back then you were constantly warm, all of your needs were met and you were as close to your mother as you will ever be.