Wow! This is gorgeous. Notice how it is created, the top is flush with the wall and the bottom stands out - just how a picture frame would be if you leaned it against the wall. This uses the ladder type idea.
Bromley House Library in Nottingham, England. A particularly fine spiral staircase and gallery is a feature of the largest room. The Library contains about 40,000 books: local history, topographical works, and a wide selection of 19th and early 20th century novels.