The inside of the bubble will be made up of seven layers each layer will have its own varied non Euclidean geometry, if a layers was mapped on foot it would appear as a sphere, however if a layer was seen from high above it would appear as a flat plane, when someone walks off of the edge of the flat plane they would appear on the other side not due to a portal but simply because they walked there, each layer has its own magically created sky with day and night cycles. The central layer of the bubble is around the size of Alaska and is host to its own Miniature Ocean and landmass each layer scales down proportionally after the first with the uppermost and bottommost layers being around the size of the state of New York.