This fell out of the sky:
Meteorite cross-sectionIt's a nickel-iron meteorite and it's a chunk of the golden dome covering our Flat Earth. Note the gold oxide patch by the left edge (iron oxide red + nickel oxide green = yellow). The pattern is called the Widmanstätten pattern and on Earth is only found in modern artificial alloys such as steel.
The people who occupy this building seem to know the facts:
Dome of the Rock shrine, JerusalemIf the meteorite wasn't enough:
Solar HaloThis effect can't happen without a reflective (or transparent) surface.