This photo is a part of a giant sculpture (three floors high) of a trefoil knot with triangular base. It is a very interesting mathematical object. The glass ceiling add up to the abstract mood of the photo. The ceiling looks like a tessellation of the hyperbolic disk.
This sculpture is located at the central lobby of the Science and Technology Museum of Beijing (China).
Very interesting photo. I did choose other submissions to go further this time though. Thank you so much.