This satellite D Gates concourse is a 684,000-square-foot steel and glass facility with two wings and 26 gates. Two glass elevators, four escalators and stairs provide access from the Rotunda to the Great Hall, the building’s centerpiece, which features a 90-foot by 50-foot wall of double-paned glass windows overlooking the runways and surrounding valley. The building also features many retail shops, restaurants and a children’s entertainment area.