National Children's Museum

The Sesame Street exhibit headlines the new National Children's Museum at the National Harbor. (credit: John Domen/All-News 99.1 WNEW)

National Children's Museum

The Sesame Street exhibit headlines the new National Children's Museum at the National Harbor. (credit: John Domen/All-News 99.1 WNEW)

National Children's Museum

The Sesame Street exhibit headlines the new National Children's Museum at the National Harbor. (credit: John Domen/All-News 99.1 WNEW)

National Children's Museum

The Sesame Street exhibit headlines the new National Children's Museum at the National Harbor. (credit: John Domen/All-News 99.1 WNEW)