The first Open House was held in London in 1992, and the concept has since spread across the world, growing into a global network of about 60 organisations that host festivals and conversations about architecture, design, and cities. “Open Cities” include London, Barcelona, Osaka, and more. Hong Kong will be joining for the first time in 2024!

Attended by hundreds of thousands of visitors, and co-created by industry professionals, volunteers, and other stakeholders, Open House Worldwide is the largest celebration of the urban landscape in the world.

The network is a project of Open City, a non-profit registered as a charity in the United Kingdom.