Open House Zagreb aims to promote the city's most attractive architectural works and set a meeting of citizens with architects, builders, investors, and owners of the buildings. The festival encourages consideration of the city's value and the role of its inhabitants in its creation and encourages participants to advocate for a well-designed and planned architectural environment. By presenting urban landscapes of the Croatian capital, Open House Zagreb invites reflections on how architecture deals with environmental, social and economic sustainability.

The first Open House Zagreb will take place on 20-22 October and presents more than thirty public and private buildings, including schools, churches, parks, ateliers, swimming pools, banks, and whole neighbourhoods. All programs are free and include a great deal of involvement by the organizers and volunteers. Open House Zagreb is led by the Association for the Promotion of Architecture and Design Zagreb Open House.