The amazing hyperboloid trellis structure made from red steel, 108m/354ft high, is stunningly lit up at night. Built in 1963, it rapidly became an emblematic landmark of the city. Devoted to telecommunications, the fifth and last floor is home to an observation platform that commands a 360° panoramic view of the city, Osaka bay and Mount Rokko. The fourth floor has an observatory, while the third floor is home to a rotating panoramic café.