This weekend and through July 7 , between 200,000 and 300,000 visitors -- more than the number of combatants -- will flock to the town and fields of Gettysburg National Military Park to mark the 150th anniversary of the three-day clash , which cost an incredible 51,000 casualties . Gettysburg attracts between 200,000 and 300,000 visitors . They will watch re - enactments , a national military park . It 's the 150th anniversary of the momentous Civil War victory . Much has changed since previous commemorations .
Gettysburg attracts between 200,000 and 300,000 visitors . They will watch re - enactments , a national military park . It 's the 150th anniversary of the momentous Civil War victory . Much has changed since previous commemorations .