Great news! These long, summer days give you even more time to explore the museum! Starting July 3, the museum will be open until 7:30 pm Monday-Thursday. That’s an extra 2.5 hours to tour the historic shipyard, check out the restoration of the historic schooner Mary E, or experience the incredible new exhibit Into the Lantern. Just one more reason this is the BIGGEST summer ever at MMM… don’t miss it!