Cathedrals of books — a barrel-vaulted hall of 200,000 volumes, a baroque ceiling fresco above the shelves, and a glowing canyon of stacked pages.







Before the internet, knowledge was kept in rooms built to make you feel small before it. This map gathers the most breathtaking libraries ever built: centuries-old halls lined floor to vaulted ceiling with leather spines, baroque frescoes and spiral stairs — and a few audacious modern temples of glass and light. Bring a quiet voice and a wide-angle eye.