There were re-enactors.
I especially enjoyed Fort McHenry's Drum and Fife Corps.
At the ceremony, they played the second runner-up for our national anthem, "O, Carolina."
And another cool part of the ceremony was this cake, made by the Ace of Cakes for the ocassion. Instead of cutting a ribbon to open the new visitor's center, the cannon on the cake shot it.
Then, one of the cannons at Fort McHenry fired twice. It was super loud, and the echo off of the buildings in Baltimore was really cool. The only unfortunate part to this whole thing, was that the band was unable to take a look inside the visitor's center, where the original "Star Spangled Banner" was on display.