What is the St. Louis Gateway Arch made out of?
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless steel
Stainless Steel
Granite
Stainless steel
Alcantara
Styrene
Stainless Steel
Granite
Stainless steel
aluminum
Alcantara
Granite
Styrene
Stainless Steel
aluminum
Steel
Granite
Stainless steel
aluminum
Styrene
Steel
Stainless Steel
Granite
iridium
Stainless steel
aluminum
Steel
Granite
Styrene
wrought iron
aluminum
Steel
iridium
Granite
Stainless steel
Cement
Stainless Steel
aluminum
Steel
Granite
Styrene
wrought iron
Quartzite
iridium
Cement
Stainless steel
aluminum
Steel
Stainless Steel
Granite
sandstone
wrought iron
Styrene
aluminum
Cement
Steel
Granite
Plywood
iridium
Stainless steel
Stainless Steel
steel
sandstone
aluminum
Steel
Carbon steel
Granite
PVC
wrought iron
Cement
Styrene
Quartzite
steel
Plywood
Stainless steel
aluminum
Steel
Stainless Steel
Granite
iridium
Carbon steel
PVC
steel
Cement
cypress
wrought iron
aluminum
Steel
Granite
Plywood
Alizarin
Stainless steel
Styrene
Quartzite
Stainless Steel
steel
ebony
Carbon steel
Stainless Steel.
PVC
sandstone
aluminum
Cement
Steel
Granite
tin
iridium
wrought iron
steel
Alizarin
Glass
Stainless steel
Stone
aluminum
Quartzite
Steel
Stainless Steel
Carbon steel
Granite
PVC
cypress
Plywood
Cement
Stainless Steel.
steel
ebony
tin
Glass
wrought iron
Stone
sandstone
aluminum
Steel
Granite
Alizarin
Stainless steel
Carbon steel
PVC
Stainless Steel
steel
Glass
Stone
aluminum
Stainless Steel.
Steel
Granite
tin
cypress
Plywood
wrought iron
steel
Alizarin
Glass
Carbon steel
Stainless steel
PVC
iridium
Stone
aluminum
Steel
Stainless Steel
Granite
Iron
sandstone
Alizarin Clay
steel
aztec
Stainless Steel.
tin
Plywood
Alabaster
Glass
wrought iron
Stone
aluminum
Steel
Granite
Iron
Spectra
Stainless steel
Marble
Carbon Steel
Carbon fiber
steel
Glass
Stone
Alizarin Clay
aluminum
Steel
Granite
Iron
tin
Alabaster
Stainless Steel.