Open House Worldwide is a network of 46 cities hosting festivals and dialogue about the built environment across the globe. In 2015, 750,000 people participated in Open House events with nearly 2 million visits to buildings enabled by 17,4000 volunteers. Taken together, Open House Worldwide is the largest celebration of the urban landscape in the world. This November 2020, we are creating the first global Open House Worldwide online festival with contributions from 46 cities around the world, broadcast to our global audience.