riba is based at 66 portland place, london—a 1930s grade ii* listed building designed by architect george grey wornum with sculptures by edward bainbridge copnall and james woodford. the institute also maintains a dozen regional offices around the united kingdom. parts of the london building are open to the public, including the exhibition galleries and library. it has a large architectural bookshop, a café, restaurant and lecture theatres. rooms are hired out for events.