The Guildhall is the administrative and ceremonial centre of the City of London. The building itself has parts dating from 1411, and is sited on the foundations of a Roman amphitheatre. It has a rich history with trials held within its halls for Thomas Cranmer the protestant reformer and martyr and of Lady Jane Grey, who Cranmer had helped install on the throne for just nine days. The building has survived the Great Fire of London and a Luftwaffe raid in 1940, but has been restored and is now a venue for lavish banquets and unforgettable events. This Guildhall virtual tour shows the view across Guildhall Yard towards the Guildhall with St Lawrence Jewry on Gresham Street visible to the left.