The Gateway Arch rises above the Mississippi River.
VOA: special.2009.03.04
Keep in mind that we've already seen this Frame Zero concept pictured above from Fujitsu and Acer's arch-rival ASUS has been showing off its dual-display laptop prototype with touchscreen keyboard for months.
He has suggested a steel frame and a stone outer shell, leaving enough space for stairways, lifts and service ducts leading to the space in the pediment above, and a basement - possibly a nightclub - linking the arch with the existing stone lodges on either side.