Explore Chicago: An open-air SkyWalk at John Hancock Observatory, not only gives you great views of the city, it also lets invites you to take a breath of fresh air!
Mazda: Construction began in 1914 under the leadership of Charles Sumner Frost and took two years, at a total cost of $4.5 million. When it opened to the public in 1916, it was the largest pier in the world.