There are several conspiracy theories relating to the airport’s design and construction such as the runways being laid out in a shape similar to a swastika. Murals painted in the baggage claim area have been claimed to contain themes referring to future military oppression and a one-world government. However, the artist, Leo Tanguma, said the murals, entitled “In Peace and Harmony With Nature” and “The Children of the World Dream of Peace,” depict man-made environmental destruction and genocide along with humanity coming together to heal nature and live in peace.
There is a dedication marker in the airport inscribed with words, “New World Airport Commission”. It also is inscribed with the Square and Compasses of the Freemasons, along with a listing of the two Grand Lodges of Freemasonry in Colorado. It is mounted over a time capsule that was sealed during the dedication of the airport, to be opened in 2094. The Freemasons participated in laying this “capstone” (the last, finishing stone) of the airport project
The wider conspiracy theory is that the airport was renovated by The Illuminati and is connected to an underground complex that will function as either a concentration camp or a shelter for the elite in a time of genocidal crisis. I don’t actually believe any of these theories (The Rationalwiki entry clears up most of them) have merit, but I find the concept and the art from the airport bizarrely creepy.
I’ll add a link to an interview with Leo Tanguma on his murals. (There’s an image of that Anubis statue included above, as well.)