Which American city contains a park with a geyser that can lift water up to 630 ft and an monumental archway that is also 630 ft tall?
Malcolm W. Martin Memorial Park:  Its major feature is the Gateway Geyser, a fountain that lifts water up to 630 ft . Gateway Arch: The Gateway Arch is a 630 ft monument in St. Louis in the U.S. state of Missouri.
i don't know