London, the most international city in the world, offers many things from commerce to literature. It is also very well known for its historic architecture. Its cathedrals, castles and palaces attracts tens of millions of visitors every year. Its modernist architectures, are perhaps less well known, but equally as impressive. Some are neo-futurist and others post-modern. Most significantly, the brutalist National Theatre and the Barbican Estates have gained considerable attention in recent times.
