Morristown Green, most commonly referred to as the Green, is a historical park located in the center of Morristown, New Jersey, United States. It has an area of two and a half acres and has in the past served as a military base, a militia training ground, and an area for public executions. It is now a public park in which many community events are held. It was adde…Morristown Green, most commonly referred to as the Green, is a historical park located in the center of Morristown, New Jersey, United States. It has an area of two and a half acres and has in the past served as a military base, a militia training ground, and an area for public executions. It is now a public park in which many community events are held. It was added to the National Register of Historic Places, listed as a contributing property of the Morristown District, on October 30, 1973.