Museum Day, hosted by Smithsonian magazine, is coming up on Saturday, Sept. 21.

Participating museums and cultural institutions across the country will offer free entry to anyone with a Museum Day ticket, which provides general admission for two people.

Those interested will be able to download one ticket per email address. In Philadelphia, there are 10 places participating.

• Penn Museum – An archaeology and anthropology museum highlighting 10,000 years of history from around the globe.

• Academy of Natural Sciences of Drexel University – The oldest natural science research institution and museum in America.

• National Museum of American Jewish History – Museum traces the stories of how Jewish immigrants became Jewish Americans.

• Pennsylvania Academy of Fine Arts – The first and oldest art museum and art school in the United States.

• Woodmere Art Museum – The museum has a large collection of paintings, prints, sculptures and photographs from regional artists.

• Independence Seaport Museum – Explores Philadelphia's maritime history.

• American Swedish Historical Museum – Tells the history of the New Sweden colonists who settled the Greater Philadelphia area in the mid-1600s.

• Fort Mifflin on the Delaware – A National Historic Landmark that offers tours of the Revolutionary War battlefield and fort.