Study for Bahnhof AB. The creation of a new server hall and concert hall combines a public and a private program in Ferdinand Boberg's beautiful Gasholder, Gasklocka 1, from 1893. The external structure is left entirely untouched, and the new programs are fitted inside with its own loadbearing structure. A slit in the inserted structure allows for the full drama of the height, the existing structure, and the glass floor concert hall at the top to be experienced directly from the entrance.