The arch really is impressive. More than I thought it would be based on pictures. Although I did not go on the tour the elegance of the shape contrasted against the rectangular buildings is bold, light and surprising. Designed by Finnish American architect Eero Saarinen and structural engineer Hannskarl Bandel in 1947. Funding and ideation for the land and project started in the 30's but construction was not completed until the 60's. One of the most expensive elements was re-routing the railroad.