Museum Day is a one-day event in which participating museums and cultural institutions across the country provide free entry to anyone presenting a Museum Day ticket. Participants are allowed to download one ticket per email address. The ticket provides free general admission on Saturday, September 21, 2019, for two people. You can choose by location, type of museum or if you already have a name, just enter it! Last year we did the Mayslake Peabody Estate and it was so cool.