With a very distinctive 'three fingered' design arranged on three floors, the new Welsh Assembly builings have been broadly designed on the galleries of a slate quarry. The architects are Austin Smith Lord and it was constructed by Pochins Construction at a cost of £20.1 million. The buildings were officially opened by the first minster, Carwyn Jones in May 2010. The building is naturally ventilated and includes large glazed areas facing South West. It is clad in Welsh slate with a copper clad entrance feature. A covered walkway runs from the disabled parking bays to the entrance. The floor throughout the public spaces within the building is also polished slate. As well as office accommodation for Welsh Assembly Government staff the building has several public spaces, including a cafe and gallery area and ?one-stop-shop? to enable the public to access the Welsh Assembly Government's services.