Petty France is a short street with a long history. This walk will time travel from the medieval origins of Petty France through its sensational history to its present distinguished profile. We shall study Charles Holden's 1927 Grade 1 listed London Underground HQ, upstaged in 1976 by Sir Basil Spence's 1976 brutalist monument to modernism, and where the original Queen Anne house was born.

A Grade 2 listed former Territorial Army Drill Hall featuring restored elements of the original 1882 design. It has a triple height central hall with the restored wrought iron balconies and roofing. Notable Neo-Georgian design brickwork. It is also unique in being the last ever military drill hall built in the UK.

Oliver Hill RIBA, 1952

Lillington Gardens in Pimlico, Westminster, was built from 1961 to 1971 by Darbourne & Darke. It set a new standard in high-density public housing with medium-rise structures and private gardens. Blending well with nearby Victorian surroundings, the modernist design won multiple awards and was praised by Nikolaus Pevsner as 'the most interesting recent housing in inner London'.

Darbourne and Darke, 1961

Visit the Thorney Island Society Archives to explore rare photographs, documents, and hidden stories that shaped the local community. Whether you love heritage, local culture, or discovering the past, the archives offer a welcoming glimpse into the area’s history.

Modern red brick building purpose-built to house the City of Westminster's historic records. Opportunity to visit the conservation studio and see treasures of the archives.

Tim Drewitt, 1995

A Grade II listed building that is home to the NAO, the UK’s independent public spending watchdog. We support Parliament in holding government to account and help improve public services. First opened in 1939 by Imperial Airways, subsequently BOAC and then British Airways, as an airport terminal. The NAO acquired the building in 1984, with the official opening in November 1986 - 40 years ago!

Albert Lakeman, 1939

One of London's best Victorian churches and a key building in the history of the Gothic Revival. Polychromatic brickwork, with interior art work by G.F. Watts and Thomas Earp, and stained glass windows and painted ceiling by Clayton and Bell. The building is Grade I listed.

G E Street, 1861

UNESCO World Heritage site dating from 11th century including stunning examples of Gothic and Medieval architecture and many hidden treasures.

, 1245

A masterpiece of Edwardian neo-baroque architecture opposite Westminster Abbey. Second largest self-supporting ferro-concrete dome in world. Its Great Hall was the venue for the Inaugural General Assembly of the United Nations in 1946.

Henry Vaughan Lanchester and Edwin Alfred Rickards , 1909

Built in Neoclassical style for Hugh Morrison (1868-1931), this was the last mansion house of its kind to be built in London. The club, founded in 1891, moved to the premises in 1946.

Detmar Blow, 1908

During the Open House Festival people will have the unique opportunity to explore the historic mansion. Opening its doors on this special occasion, visitors will enjoy unprecedented access to the Argentine Ambassador's Residence in the UK and explore a glimpse of our culture through an art exposition of different Argentine artists.

Thomas Cubitt, 1851