I think these are the stairs in Charlotts "Castle" This elegant and stunning staircase can be found at Musee Gustave Moreau in Paris. See 25 of the most creative and modern staircase designs from "homedit.
I love the architectural style of this house. Everything is very tall and narrow. I love the dark spiral stair case with the the dark wood on the doors and floor. The high ceilings and the arched doorway also are neat.