Annual London-based festival Open House welcomes visitors to explore buildings and outdoor spaces, offering tours, talks and workshops over nine days.

Venues and spaces open to the public include architecture and art studios, community centres, clubs, government and health institutions, cinemas, libraries, religious buildings, monuments, sports centres and cemeteries.

2026 marks the festival's 35th edition.

Open House Festival 2026 takes place from 12 to 20 September 2026 at various locations across London, UK.