of Kenzo Tange's works in the 1990s. The cubic volumes on the octagonal base rotate on a 45 degree plane of reference, diminishing in scale towards the top of UOB Plaza One. The two buildings are linked by a six-storey podium, measuring wide and supported by four columns. This place is a large airy atrium linking Raffles Place to Singapore River without entering the building. The banking hall has full height glass walls to see through the Singapore River from the financial district. The change in lighting brings out the geometric qualities of the building's architecture, highlighting the buildings with shafts of light and shadow. The external curtain wall system of the building represents a significant and innovative contribution of the evolution of building facades over time. The "performance wall" envelope of the towers is a composite of white and grey granite and insulated grey glass units. The atrium is also known as a "city room" and above it has a large office space and a large skylight, which gives the place natural lighting. A double-storey sky lobby could be found on the 37th and 38th floors, which provide panoramic views of the city. It is also used for workers to transfer lifts from the lower floors to the higher floors. However, the sky lobby has been closed to the public due to security reasons after the September 11, 2001 attacks. There are two sculptures on the ground floor; Homage To Newton by Salvador Dalí in the city room, and another designed by Fernando Botero. Gallery See also Tallest buildings in Singapore List of tallest freestanding steel structures Robot Building (UOB Bangkok headquarters) References Further reading ' External links Downtown Core (Singapore) Office buildings completed in 1974 Office buildings completed in 1992 Skyscraper office buildings in Singapore Raffles Place