Top Secret underground tunnels, apocalyptic artwork, Freemason plaques, and bizarre paintings of dead children. Built in 1995, for $4.8 Billion, there are many odd things about Denver Airport.

All permanent artwork at Denver Airport – https://www.flydenver.com/about/art_culture/permanent

Alex and Phil 1994 Story – https://diaconspiracyfiles.wordpress.com/2009/10/30/secret-alex-christopher-photos-from-beneath-denver-international-airport/#more-392