There is a large pool with a sky view in the middle of it

The Hyperbolic Time Chamber (Room of Spirit and Time , Seishin to Toki no Heya, lit. "Room of Spirit and Time") is a mysterious dimension that is a separate dimension from that of Earth.
There is no night or day in the Room, but the surroundings remain a constant bright iridescent white aurora. Its reflective floor is of undefined area, and the Room's boundaries are thought to stretch to infinity in all directions even though it appears to have a definite atmosphere, limiting its size to about that of the Earth.

(Cloudy) (Sky) (Raindrops) (Rainy Sky)

(View from the Room)

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The Hyperbolic Time Chamber (Room of Spirit and Time , Seishin to Toki no Heya, lit. "Room of Spirit and Time") is a mysterious dimension that is a separate dimension from that of Earth. There is no night or day in the Room, but the surroundings remain a constant bright iridescent white aurora. Its reflective floor is of undefined area, and the Room's boundaries are thought to stretch to infinity in all directions even though it appears to have a definite atmosphere, limiting its size to about that of the Earth. (Cloudy) (Sky) (Raindrops) (Rainy Sky) (View from the Room)

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