Like zombies, the conspiracy theories about everything from aliens to underground bunkers, lizard people and secret military installations at Denver International Airport never die.

DEN officials do their best to debunk the really bizarre claims, but they have fun with them as well.

This month, to coincide with the Halloween season, the airport is even hosting a series of conspiracy theory-themed events, including a “Conspiracy Theories Uncovered” Art Exhibit (near the north security checkpoint; open 24 hours) with video, artwork, props and more that explain the most pervasive theories, free hour-long conspiracy theory art tours (Tuesday, Thursdays and Saturdays through October 29), a “What’s Under DEN” Facebook contest and a Conspiracy Costume Party – on October 20 – with a free screening of Close Encounters of the Third Kind out on the plaza between the airport terminal and the Westin Denver International Airport.

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