BnF Richelieu is the historic home of the French national library, and since 2022 anyone can walk into its great oval reading room and sit down. Stand at one end and the room runs 43 metres away from you under a glass dome, with three tiers of iron balconies ringing the walls above the desks. Curved shelves run right round; you can pull out whatever you like without asking anyone. Students, children and visitors read side by side, and quiet conversation is allowed.
The buildings were Cardinal Mazarin's palace, and the king's library moved in during 1721, taking over a wing that a Scottish banker's failed bank had left empty. The library grew through the whole block and built two reading rooms. Henri Labrouste finished the first in 1868 and roofed it with nine domes on slender cast-iron columns; that one is a research library, and the public may only look in from outside. Jean-Louis Pascal designed the Oval Room as a public reading room. Work began in 1897 and it did not open until 1936, after his death.