Celebrate America 250 with historic stays and memorable events across the country. (iStock) America turns 250 on the Fourth of July, and communities across the country are marking the milestone with a yearlong lineup of concerts, fireworks, festivals and historical events. From California to Boston, destinations are building special travel experiences around the Semiquincentennial, making this a memorable time to hit the road. We rounded up eight destinations worth adding to your itinerary for