The Fourth of July weekend in Philadelphia includes many holiday celebrations that go beyond the Wawa Welcome America festivities. The Phillies are hosting post-game fireworks. City Cruises are offering a cruise on the Delaware River. Fort Mifflin is hosting its '4th on the Fort' event. The 'Sound of Liberty' concert will happen at the Chapel of Four Chaplains. And the Science History Institute is delving into the artistry of fireworks.