NMAI is the National Museum of the Native American Indian on the National Mall in Washington, DC. The admission is FREE to visit and opens daily from 10:00 AM till 5:30 PM except for Christmas day.
In the building you will see many exhibits, a cafe and museum gift shop as well as theaters.
There are also centers there for adults and children to do hands on exploring and crafts.
My daughter and I have been here and found it very interesting, educational and fun!