What to do Downtown this weekend?

[clubBR]

I have business downtown near Mott St. this friday and I want to ask whats there to do around there on a Friday afternoon? Any renovated parks in the area? Museums? Free outdoor concerts? Any kind of response will be greatly appreciated. Thx

[Punzie]

National Museum of the American Indian (http://www.nmai.si.edu/)

At Bowling Green, open til 5pm, free admission.