The window in the stairhall has been filled in with glass brick.
He photographed a figure through glass bricks and then painted this muddled image.
The floor is paved with both natural and glass bricks.
The glass bricks provide interior lightning in lieu of full windows.
Inside, fluorescent lights provide lightning to areas not nearby glass brick.
The three operating rooms are over 80 years old, and one of them has an opaque wall of glass bricks.
The windows are sometimes made of glass brick, permanently cemented in place.
Their appearance was compromised 45 years ago when the window bays were filled with glass brick.
In some of the units, glass brick was used as partition material.
We've sectioned it off here and there with glass brick.