I’m quite late posting this, but a few weeks ago c and I visited the Harvard Museum of Natural History on a Sunday Morning. It’s free to Mass. residents every Sunday morning (year-round) from 9:00 am to 12:00 pm and on Wednesdays from 3:00 pm to 5:00 pm (September through May). Being about a 15 minute walk from our place, it’s something we should visit more often! We walked around Harvard Yard a bit, and tried to see the Harvard collection of historic instruments, but it was closed.