A solitary building, integrating requirements of conventional civil service security with Dutch openness was needed. Traditional (former West Berlin) city planning guidelines demanded the new building to complete the city block in 19th century fashion, the (former East Berlin) city planning officials had an open mind towards the OMA proposal for a freestanding cube on a - block completing - podium. The office in the end realized the building in a combination of obedience (fulfilling the block’s perimeter) and disobedience (building a solitary cube).