Open City Architecture Tours: Square Mile.

A walking tour accompanied by expert architectural guide, the walk will take in London's historic core: a hugely impressive mix of history and modernity whose dedication to financial services belies an architectural richness of new buildings populating an historic street pattern that goes back to the Middle Ages. From the historic sober high walls of the Bank of England to the brand new glass cladding of Foster and Partners’ 30 St Mary Axe (The Gherkin) skyscraper, the architecture of the City has always been an expression of wealth and quality, and with Heron Tower now complete the architectural debate in the City concerning the issue of tall buildings continues.