JA56 YEARBOOK2004 JAPANESE ARCHITECTURAL SCENE IN 2004 work The Oita Palace Aqurium Unitamago location Oita, Oita Prefecture architects Nikken Sekkei structural engnieers Nikken Sekkei mechanical engineers Nikken Sekkei general contractor JV of Takenaka Corporation and Saiki Construction site area 11,008.05m2 building area 7,582.24m2 total floor area 10,881.09m2 structure reinforced concrete, partly steel frame; 1 basement and 3 stories pricipal use aquarium completion date March, 2004 next back top