One of the major starting-points in the design of the new building was, next to multi-efficiency and flexibility, to create a heart for the Gasunie. Bringing all the people working for the Gasunie together does not only result in a 'calculated' efficiency but also gives them a feeling of belonging together. A huge vertical 'indoor street' forms the binding element between the different floors. As much attention was paid to the inside as the outside. The organic character of the design is echoed throughout the interior of the building, even down to the specifically designed furniture. One of the most striking features of the interior is the use of colour in the foyer and stairwell. The architect chose earth tones for the structural elements like the columns and central pillar of the stairwell, to symbolize the building's attachment to the ground. In 2007 this building was chosen by the readers of newspaper Trouw as the "Most beautiful building of Holland".