There's a pretty good episode of the 'Thinking Sideways' podcast that covers the theories regarding this.

There's an underground military base under it.

Shit...I am lol

Yeah...totally not there.....

I agree it's actually one the best airports in the US.

It's got some heavy occult design influence. There is also reports of an underground system that is pretty massive.

I have seen for myself the murals and the 'New World Airport Commission' plaque. Pretty creepy stuff...

Very weird. It smells like a hospital and it's way too bright

The occult connections are everywhere - the paintings, the horse, the cornerstone, even the runways align like a swastika. These things are likely not coincidences. Then the underground complex is the kicker.

If that were true they could have said as much. But they didn't, they said they made an "error" in building the structures, then buried them and started over. The tornado idea sounds like post-rationalization.

ive always heard it was bad as far as airports go but ive never been so idk

I honestly don't think anything of it. Sure, the murals are fucked up NWO shit, but it's not like artists don't hide messages in their art just by themselves. I'd do the same if I was commisioned by the government to make a mural on a public building.

As for the theory that there's something under the airport, I haven't heard anything convincing yet.

I think it's a nice airport. I couldn't find all the paintings and stuff but I did see an ugly mural and the gargoyle-in-a-suitcase statue. There's also the "swastika" runway on Google Maps (I know it's a religious symbol).

The security there is a bunch of assholes

The buildings buried underground during construction are like, so obvious, that you have to start there. This is actual fact.

The fact is that Denver is a well-protected location and is clearly a major site for any post-disaster USA establishment. It makes perfect rational sense that DIA would have been constructed in a manner to support this long-term goal.

Remember that the airport was never even necessary - Stapleton was perfectly good and had room to expand, and was much closer to the city.