It may be hard to believe, but it has already been 26 years since Denver International Airport (DEN) sprang up east of downtown Denver to replace Stapleton International, which was located in the midst of the growing city. Over the years, the “new” airport’s tented roofs have become iconic, and times have changed. The entire industry has evolved, and DEN’s passenger numbers have grown dramatically. To address those changes and prepare for projected future growth, the airport is in the midst of making $770 million worth of upgrades to the Jeppesen Terminal.