The result of years of planning, Exeter's new police station will be the base for 450 officers.
The building is among the top 10% most sustainable in the country - all thanks to solar panels, an eco friendly heating system and other measures.
The custody centre is a far cry from the city's previous facility with forty modern cells - some of which feature special cameras able to monitor the heart rate of detainees.
While Exeter's new station is still being finished, staff have already moved into their equally modern building in Liskeard which will support around seventy officers based in south east Cornwall.
The chief constable was proud to be opening the buildings after years of austerity - and reductions in police staff - working from buildings that were sometimes an embarrassment.
The building was developed with an awareness of Cornwall Council's environmental plans, as they aim to become carbon neutral by 2030.