What is st. louis city flag?

The St. Louis City flag consists of a blue background with a white fleur-de-lis symbol in the center, representing the city's French heritage. The flag was first adopted in 1964 and has been modified twice since then, in 1969 and 2004. The current design features a slightly darker shade of blue and a slightly larger fleur-de-lis than the original version. The flag is flown at various city buildings, including City Hall and the Gateway Arch. The flag is also used by many citizens as a symbol of pride for their city.