Doors Open Denver, the premier event showcasing the richness and history of Denver’s built environment and promoting quality design, presented by Denver Architecture Foundation, includes virtual tours, in-person tours and archived virtual tours from 2020. The 2021 virtual tours will take place Mondays through Thursdays from 5:30 p.m. to 6:45 p.m., featuring iconic and unique spaces in Denver, Boulder and Colorado Springs, including cultural, commercial, private, and civic sites. In-person tours take place Saturdays and Sundays with four tours per day. The 12 archived virtual tours from DOD 2020 will be available for viewing through Oct. 17. DOD Tickets cost between $6 and $30 depending on tour and vary in cost for members v. nonmembers. For more information and to purchase tickets, visit denverarchitecture.org.