The best word to describe this area of Madrid would be 'unfinished'. Situated to the south of Atocha station, it is home to opportunistically sited corporate headquarters, unfilled apartment towers and uncompromising perimeter blocks with only half the lights on at night. It is dominated by emptiness, land that still lies vacant after last decade's market collapse. One day it will be described as a neighbourhood, but what that neighbourhood will look like is still undecided. In a city bursting with character, this shapeless place is unique.
To design a library for this community-to-be is a near impossible task. My proposal is as undefined as the place it serves, a flexible frame waiting to be filled. The result is a meta-library, a collection of all the bits of building that might one day be needed. Adjacency to a high speed rail line is too good an opportunity to pass up, and the library interfaces with this international route to connect itself to a much wider physical network. The building hangs above the ground, a question waiting for an answer.