The Barbican Estate is built on some 40 acres (15.2 hectares) of land that was laid waste by WW2 bombing. Built from 1960-73, it was designed and built for city professionals and officially opened by the Queen in 1982. The dramatic architecture is the work of Chamberlain, Powell and Bon. Today it houses more than 4,000 people in 21 separate blocks. The estate is known for its many amenities including public and private gardens and the Barbican Centre. The Lakeside Gardens and Terrace are particularly impressive public spaces with waterside seating and city views.