Doors Open Denver (DOD) is an annual two-day event that provides opportunities for residents and visitors to explore our city, creating meaningful connections to the built environment and promoting quality design. Each spring, the Denver Architectural Foundation (DAF) inspires the community to connect, through self-guided (free) or expert-guided (fee-based) tours of Denver’s unique spaces, including high-profile, historic and/or artistic feats of architecture and design. Doors Open Denver tells the story of where Denver is, where it has been and where it’s going.