ðə wˈɛstɚn bˈɪldɪŋ wʌz ɛkspˈændᵻd ɪnðə nˈaɪntiːnhˈʌndɹɪd twˈɛnti z wɛn ɐ wˈʌnstˈoːɹi dˈaɪnɪŋ ɹˈuːm, ðə sˌoʊkˈɔːld hˈæɡɐpˌævɪldʒˌɑːndʒən, wʌz bˈɪlt təwˈɔːɹdz bɹˈʌnsvaɪkən ɐkˈoːɹdɪŋ tə kˈɑːɹl ˈækɚblˌædz dɹˈɔːɪŋz.
The western building was expanded in the 1920s when a one-storey dining room, the so-called Hagapaviljongen, was built towards Brunnsviken according to Carl Åkerblad's drawings.