A tall, gleaming arch stands on the west bank of the Mississippi River. It reaches 630 feet into the air. And it is the tallest man-made monument in the United States. It honors the brave men and women who traveled west to settle new lands. Today you can visit this memorial. At the top is a long, narrow room with many windows. You can look eastward across the Mississippi River. You can see into Illinois. Many pioneers came from that direction. Or you can turn around and look westward. Maybe you can pretend that you were a pioneer. Let's follow their dream.