The pyramid is the iconic entrance to the underground lobby which offers access to the Louvre museum famous for its many paintings including the Mona Lisa.
Contrary to urban myth (and Dan Brown’s The Da Vinci Code) the Pyramide du Louvre is made up of 673 panes of glass, not 666.
This was a seven exposure HDR using native Canon 6D bracketing. Post-processing in Photomatix. I had done a 9 exposure, twenty minute set of brackets but these were spoiled by a couple taking wedding shots at after 10pm at night (go figure!)