Open House Vilnius features open architecture weekends in Vilnius. Since 2015, architecturally important buildings open their doors to the general public and tours are led by volunteer guides, architects, or building representatives. The event aims to promote public appreciation and understanding of architecture and design, and to foster a dialogue between architects, urban planners, and the general public.

Since 2015, Open House Vilnius is a member of the Open House Worldwide international network, and this year it joined Open House Europe, a new cooperation project, co-funded by the European Union, that connects 12 festivals across the continent.