Source Spiral staircase that may have beeen designed by Leonardo da Vinci. Located in Chambord, France [1200 x 1818]
Feodora75 says More info [here](https://www.pariscityvision.com/en/france/loire-valley-castles/chambord-castle/staircase)
Feodora75 says
More info [here](https://www.pariscityvision.com/en/france/loire-valley-castles/chambord-castle/staircase)