What do proponents of the “Denver International Airport conspiracy” suggest about the airport, and what evidence challenges these claims?

The Denver International Airport conspiracy theory suggests that the airport is a cover for a secret underground bunker or a base for the New World Order. Proponents point to unusual artwork and construction features as evidence. This theory is debunked by the airport’s own explanations and standard practices in construction and art. The design elements are explained by the airport’s history and artistic choices, not secret agendas.