I found the original location of backrooms level 9223372036854775807 - Turns out, the pic was taken at a church in france: Église Notre-Dame de Royan : r/backrooms

The End of the Backrooms… Level 9223372036854775807

The End of the Backrooms… Level 9223372036854775807

I MAY HAVE FOUND WHERE THE ORIGINAL BACKROOMS PHOTO WAS TAKEN!! : r/ backrooms

360° view of Ronchamp, Chapelle Notre Dame du Haut by Le Corbusier, Main Entrance - Alamy

Level 9223372036854775999: The True Final Level or Not?, Backrooms Freewriting Wiki

The Backrooms - Level 3 (Found Footage)

The Backrooms (lost original version of image from Creepypasta; existence unconfirmed; 2012) - The Lost Media Wiki

The End of the Backrooms… Level 9223372036854775807

WHERE WAS THIS BACKROOMS PHOTO TAKEN?

Level 105 - The Backrooms

Level 9223372036854775807 is real