A place in United States, Alton is an interesting place to visit, given its unique culture, history and character. The nearest major city to Alton is Saint Louis. Attractions in Saint Louis include Gateway Arch, Saint Louis Zoo, City Museum. Also, to reach Alton, you'll have to take a flight to Saint Louis; so its not really a detour. And even if it is, the city is worth paying at least a quick visit. Get in the character of the city, this city requires at least of 1 to 2 number of days of exploration.
Don't just take a trip, let the trip take you! Have a enjoyable time at Alton.