The Pingtan Children’s library is located in the Dong Minority village of Pingtan, Tongdao Province, Hunan, China. This small timber structure, three stories high and approximately 80 sqm in area is entirely built in timber. The building is located within a primary school courtyard serving more than 400 local children. Rather than a building with floors and rooms, this is a building consisting of two interwoven spiral staircases, a double helix that in turn becomes both the vertical circulation and the seating for the children.