Housing block that look like a well from inside

Looking up from 5th storey, the sun is bright.
Looking down from 21st storey, this place indeed looks like a well.
Another shot on how the housing look like
I went up to the highest floor, 40th floor, and I took a photo of it. Can be quite scary for those who have height-fear. Btw, the lower floors look dark, the sun ray could not cast all the way down to ground floor.
Spotted a water tank on the opposite block. A close-up on the water tank, which is directly above a unit.

Finally, I managed to visit this new housing estate that has this unique design. The block is constructed in such a way that the four corridors are connected together, a rectangular shape. If you were to look down from any of the corridors, the lower floors look like a well. See photo above.

The place looks dim on the ground floor, I wonder is it because of the 40th floor is too long (high) for the sun ray to cast down?

Anyway, it will be a nice place to live on the upper floors, can have a nice view of the surroundings. For those units that are facing the city, they will have a wonderful view of the city! If you have the intention to choose one of the units there, do avoid the highest floor - 40th floor.