It's National Museum Day on Saturday, September 22, and there are two Boise museums that will celebrate that with free admission.  There's just one thing you have to do.

National Museum Day starts with the Smithsonian in Washington D.C and Smithsonian magazine as a way to encourage us to get into our neighborhood museums and soak up some history.  And keep the kids busy.  Parents love that.  To get free admission, you just have to download a special Museum Day ticket.

Participating museums all over the country are giving free entry tomorrow to anyone with a Museum Day ticket, and you can download one HERE for the Old Idaho Penitentiary or Idaho Botanical Gardens.

The Museum Day ticket gives free admission for two people on Saturday, September 22, and just one ticket is allowed per email address. More than 250,000 people downloaded tickets last year nationwide, and they're expecting more people to take advantage this year.

The theme is Women Making History, and the goal is to honor female trailblazers in areas including arts, sciences, innovation, and culture.  Okay!  We love having the chance to celebrate you superwomen for all you do on a daily basis, and we'll do that tomorrow for women who have had an impact on history too.  Use #MuseumDay and #WomenMakingHistory on social media and we'll watch for the pics.

We love free stuff and we love our Boise museums, so this will be a great opportunity to soak up both.

Visit The Old Idaho Penitentiary on Saturday between 12 pm and 5 pm and see Solitary Confinement, cell blocks, and the Gallows for free.

The Idaho Botanical Gardens are part of the Old Penitentiary Historic District and will be open Saturday from 10 am to 6 pm, and also free Saturday because of Museum Day.

Over 1500 museums will be part of this across the U.S.