The 42 best things to do in D.C. this weekend and next week

This weekend’s headline event is a three-day festival to celebrate the 10th anniversary of the National Museum of African American History and Culture. But the festivals keep on coming: Fiesta D.C. downtown and the Manassas Latino Festival mark Hispanic Heritage Month. There’s a blues festival in Greenbelt, a folk festival in Takoma Park, and WPFW’s Jazz and Justice Festival in Meridian Hill Park.