Discover why the over 750,000-square-foot Old War Office is a designated Grade II building. Hailed as being of national importance, a Grade II-listed building is defined as a UK structure that is “of special interest, warranting every effort to preserve it.”

Admire how its four distinctive domes create a dignified rooftop silhouette, typifying Edwardian Baroque architecture, while the building’s monumental turrets add to the grandeur of The OWO. Each of these towers is named for some of England’s most famed women, including noteworthy female spies and Clementine, Winston Churchill’s adored wife.

Walk in the footsteps of monarchs like King Henry VIII and Anne Boleyn. Before the Old War Office, this distinguished Westminster address was home to the Palace of Whitehall, at one time Europe’s largest palace, which saw royal weddings and the first recorded performance of Shakespeare’s The Tempest grace its halls.

Soak up the inspiration behind film’s most iconic secret agent, James Bond. Once the workplace of Ian Fleming during his time in Britain’s Naval Intelligence Service, the corridors of the Old War Office are where the spy novelist dreamt up 007 and even served as Mi6 headquarters in several movies.