Also a place for focus for the 250th: the site of the Battle of Lexington: Buckman Tavern
Another fun trivia spot is Buckman Tavern. For those who don't know, the Battles of Lexington and Concord were kind of spur of the moment after the militia was rabbled from the call of Paul Revere and others who saw the British were coming. the Lexington militia was marshalled out at Buckman Tavern and kept there to await the coming British (where they were fed and could rest).
When the British arrived, the militia met them on the common ground outside (now, battle green) and confronted them. We don't know who shot first, but Buckman Tavern was the site of the first shots of the revolutionary war, and one of them even hit the door! Now it's a museum and they even have the recipes of what was eaten at that time, such as the stews they would make like Pork Apple Stew and other similar hearty meat based stews and Johnnycakes (basically cornbread).
So another fun place to learn about for the 250th, especially since a restaurant was indeed where the initial shots were recorded!