You can enjoy the amazing view of the city while walking along the bridge. Plus the bridge itself is beautiful as well. However the air quality on the bridge is horrible.
Had an awesome adventure with this bridge. I went by bike from the Manhattan side, but the signs were very confusing. I landed up at the lower deck of the bridge, so I biked with my bike next to the cars (little bit dangerous but great adventure). Once I arrived in New Jersey, I took the bicycle lane on the upper bridge deck back to Manhattan. Really stunning view. All with all it is a great landmark and I had a great adventure.