The new Museum of London is about to emerge from underneath the Barbican to invade and inhabit the streets of London. The existing complex formed by the Fish, Poultry and General markets constitutes a historical and architectural cross section of the city: Victorian meets modern, brick meets cast iron, slate meets glass. Rather than trying to unify the distinct architectural identities of the buildings, we propose to explore their diversity to create a museum of the city of London that is as rich in architecture and history as the city itself. The new architectural additions will continue the legacy of the complex by adding an authentic layer of sensibility to the existing strata of architectural sediments. The city of London with all nooks and crannies, raw beauty and quirky charm, will form the diverse frame for its own museum. The city in the museum and the museum in the city.