The Oklahoma City Underground is a series of pedestrian tunnels and skyways connecting skyscrapers, hotels and venues in sections of Downtown Oklahoma City's central business district.
The rest of the tunnel was a result of the urban renewal of the late 1960s and early 1970s as designed by I. M. Pei, with major construction between 1972 and 1974.
The tunnels were a vibrant part of the OKC landscape, including several shops and restaurants, but lost much of their popularity with the end of the last oil boom.
[1] Originally named the Conncourse, in honor of Oklahoma City banker Jack Conn,[2] it was renamed the Underground after an extensive facelift conducted by architect Rand Elliott.
[3] With the 2006 facelift, Rand Elliott has turned what had become a somewhat dated appearance of the old tunnels into a "walk-in work of art".