Open House London, the annual festival of architecture and design, will take place over the weekend of 17/18 September. Regular attendees will know that this is a great opportunity to see C20 architecture and brand new projects in the capital, as well as many older buildings. It’s all free to enter, but don’t forget that some venues require advance booking (due to limited space) and not everywhere is open on both days. More.

Paul Nash
Tate Britain, London, from 26 October to 5 March 2017
Renowned as a surrealist and a war artist, Paul Nash was fascinated and influenced by the landscapes and ancient past of Britain. This wide-ranging exhibition covers his earliest drawings through to his final works from the Second World War. More.

You Say You Want a Revolution? Records and Rebels 1966–1970
V&A, London, from 10 September to 27 February 2017
From psychedelia to the ‘Space Race’, via Carnaby Street, Paris and Woodstock, this exploration of a turbulent and influential era explores the concept of revolution on many different levels. More.

Peter Blake: Alphabets, Letters & Numbers
De La Warr Pavilion, Bexhill, from 13 August to 27 November FREE ENTRY
Best known for his work (with Jann Howarth) on the cover of The Beatles’ Sgt. Pepper’s Lonely Hearts Club Band, artist Peter Blake has created several works based around the alphabet. The three print series in this exhibition, Alphabet (1991), An Alphabet (2007) and Appropriated Alphabets (2013), include works in silkscreen as well as found imagery and typography. More.

We Live in the Office
RIBA, London, from 22 September to 5 February FREE ENTRY
This site-specific installation by multi-disciplinary artist Giles Round turns the RIBA gallery into a production studio and shop, exploring the tension between the changing interior and static exterior of buildings. More.

Ardizzone: A Retrospective
House of Illustration, London, from 23 September to 15 January 2017
Former C20 Society Chairman Alan Powers has co-curated the first major exhibition of illustrator Edward Ardizzone’s work for 40 years. You can see more than 100 pieces, including the manuscript for Little Tim, poster designs, mural artwork and sketchbooks. More.

Still showing
Britain in the Fifties: Design and Aspiration
Compton Verney Art Gallery & Park, Warwickshire from 9 July to 2 October
As well as paintings, posters and textiles by Edward Bawden, John Piper and Enid Marx, visitors can find out about fashion, cars and holidays and see a recreation of a 1950s allotment. More.

Concealment and Deception: the Art of the Camoufleurs of Leamington Spa 1939-45
Leamington Spa Art Gallery & Museum, from 22 July to 16 October
Work by Dorothy Annan, Stephen Bone, Mary Adshead and Edwin La Dell features in this fascinating exhibition about the vital role of the Civil Defence Camouflage Establishment during the Second World War. More.

Georgia O’Keeffe
Tate Modern from 6 July to 30 October
A major retrospective of the artist dubbed the “mother of modernism” and best known for her series of flower paintings. Tate Modern has brought together more than 100 O’Keeffe works, covering her New Mexico landscapes and still lifes. More.

Engineering the World: Ove Arup and the Philosophy of Total Design
V&A until 6 November
The V&A Engineering Season explores the design philosophy of Ove Arup (1895-1988), whose projects included the Sydney Opera House and the Barbican Estate. More.