Architect Peter Cook will build a children’s Serpentine Pavilion with Lego

For the first time this summer, London’s Serpentine Pavilion will feature a playful companion – a children’s pavilion designed by architect Peter Cook and decorated in Lego bricks.

Play Pavilion is designed for the Serpentine Galleries and iconic Danish toymaker The Lego Group. As its name suggests, its playful design encourages the gallery’s youngest visitors to engage in adventure and discovery.

The brightly-coloured, 25-ft-tall orange pavilion features a geodesic design and rounded walls that will be embellished with murals made out of Lego. Openings, tunnels and crawling holes punctuate the walls and a slide to empower play.

A steel frame supports the structure, clad in plywood panels covered in brightly coloured Lego panels, and a translucent ethylene tetrafluoroethylene skin for the roof, allowing glimpses of the sky beyond.

The Play Pavilion opens to the public on 11 June 2025, to coincide with World Play Day, and will accompany the adjacent 2025 Serpentine Pavilion by Bangladeshi architect Marina Tabassum (which opens in early June and runs until October) until August. After that, it will be dismantled and relocated elsewhere for another play session.

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