The Gateway Arch is a famous landmark it is the tallest monument standing at 630ft in the US. I do not know about the weather at this moment. 
 Hi, can you tell me about St. Loius? I know it's in Missouri but what are some things it's known for? 
 Sorry no information on the economy. I can tell you the arch also pays homage to Thomas Jefferson. 
 thank you any other interesting info? 
 Thank you for that info! What is the main source of income for people in St Louis?
The Gateway Arch is a famous landmark it is the tallest monument standing at 630ft in the US. I do not know about the weather at this moment.