Access and Door Control

The new preventive detention building was constructed on the grounds of Diez Prison (Rhineland-Palatinate, Germany). The 19.5 million euro building offers space for 64 preventive detainees. In the four-storey building with a T-shaped floor plan, they have 18 square metre rooms, each with its own bathroom and a small kitchenette. The new building became necessary due to a decision by the Federal Constitutional Court in May 2011. The practice of executing preventive detention in prison buildings, which had been common in all federal states until then, was declared unconstitutional.