The Blue Tower, formerly known as the tour SAIFI, has been a well known professional address in Belgium ever since its completion in 1976. The 25 storey building provides high level of flexibility regarding occupation of space. The plan has been specially studied to offer office space generously supplied with daylight. In 1993-1997, the tower has been transformed and renovated. : new lobby with a rotunda 15 m diameter adding 180 m² where a café and an art gallery are now featured, opening the Blue Tower to people living and working in the vicinity.