Again it is the mixed lighting that has given the SnapSeed app something to work with.
Had the roof been lit just by natural light from above, I am pretty certain these colours would not have been brought out in the processing.
So, what you are seeing is a shot from the newly constructed spiral staircase at the Tate Modern in London.
the staircase leads from the basement up to ground floor level and there is a decidedly Middle Eastern decorative effect in the pierced stonework.
In the previous post there is a shot of the arches seen at basement level.