Downtown OKC’s Underground (formerly known as the Conncourse) is a series of tunnels and skywalks that connect a large part of the downtown buildings and parking garages. Opened in 1974, the tunnel system is about one mile long and covers more than 20 square blocks.
Today, the Underground is managed by the Downtown Business Improvement District and Downtown Oklahoma City Partnership and is open to the public from 6 a.m. to 8 p.m., Monday through Friday. The tunnels provide direct connections to many other buildings in the area, and The Underground hosts many photo galleries and art installations.
To learn more about The Underground, call (405) 235-3500.