The tower's height is 70 metres, the diameter at the base is 20 metres, and each of the two arms is 25 metres long.[2] The tower has currently three faces, two faces on the front, and a face in the back. The face located at the top, whose diameter is 11 metres, represents the future. An antenna attached to it works as a conductor.[2] In the eyes of the face, Xenon arc lamps were used during the expo, however they became decrepit and broken down after the expo. On September 25, 2004, new lights were installed next to the old ones and lit to advertise the Expo 2005.[6] A face between two arms represents the present, and a black face on the rear of the tower is the sun of the past. Originally another face, "Sun of the Underworld" was located on the basement floor, yet currently it has been moved to an unknown location. The jagged red paintings on the front of the tower represent thunder.