Denver International Airport has fun with conspiracy theories, claiming the walls conceal construction work, not lizard people.

After years of speculation by conspiracy theorists, officials at Denver International Airport in Colorado have come clean about something unusual happening at the facility.

Known as DIA, this airport spans nearly 53 square miles (13,726 hectares), making it one of the largest in the world. Among its vast restricted zones, underground tunnels, and strange, often unsettling art, there’s also a giant blue fiberglass mustang with glowing orange eyes.

To some, the whole thing feels downright suspicious, fueling theories that the airport is part of a grand scheme by the Freemasons, the Illuminati, or even a hidden colony of lizard people.

Gargoyle statues and space alien images adorn the airport, with one eye-catching poster asking, 'What’s behind this wall?'

The airport even launched a website called 'Den Files' to highlight some of the most bizarre conspiracy theories surrounding DIA, which date back to the airport's opening.

One curious theory involves the date of the airport’s dedication, March 19, 1994. Adding up the digits (1+9+1+9+9+4) gives you 33 – a number that supposedly represents the highest level in Freemasonry, according to Den Files.

Scattered throughout the airport, you'll find time capsules and plaques adorned with Masonic symbols, all crediting the mysterious 'New World Airport Commission' – a non-existent group that sounds eerily similar to the 'New World Order.'

This has sparked rumors that Denver’s airport might serve as a secret headquarters for the world’s most powerful elite, or perhaps a hidden refuge for lizard people awaiting the apocalypse, according to the site.

Some of the airport’s murals are laden with apocalyptic imagery that feeds into these wild theories.

In a 2011 Ridiculist segment, Dinogo’s Anderson Cooper explored a YouTuber’s theory suggesting there were hidden symbols embedded in the artwork at the airport.

Travelers will finally uncover the truth behind all the mysterious walls by late 2021, when the project's final phase is expected to be finished.