The Gateway Arch in Saint Louis,Missouri is the tallest freestanding monument in the nation.

VOA: special.2009.03.04

It is the largest single-span concrete arch bridge in the Western Hemisphere.

VOA: special.2010.10.27

the Gateway Arch in Saint Louis,Missouri;

VOA: special.2010.07.30

Earlier this year, Tehran's arch-enemy Israel test fired its own Arrow 2 missile in a simulation of stopping the Shahab-3.

VOA: standard.2009.09.28

The school I went tohad an arch just like that. Was your school here in Phoenix?

VOA: standard.other