Description: [edan-image:id=siris_sic_9273,size=500,center]Have you ever heard of Smithsonian Park? If you are visiting the Smithsonian today, probably not. But if you had visited the Smithsonian in the 1850s, it would have been one of the first things you experienced.Smithsonian Park occupied the area between the Smithsonian Institution Building, or the Castle, and Downtown Washington,