Construction Controversy The airport opened in 1995 amid budget overruns and rumors that vast tunnels hid clandestine facilities.12 Ongoing Speculation Murals, gargoyles, and a blue mustang statue fuel talk of Illuminati symbolism and doomsday shelters.345 References flydenver.com ↩ gao.gov ↩ history.denverlibrary.org ↩ denver.org ↩ en.wikipedia.org ↩