Not as large, but just as significant to W-S history is Bethabara
Historic Bethabara Park
Btw, Old Salem was the setting for a 1996 made-for-tv movie based on Shirley Jackson's short story "The Lottery"
The Lottery (1996) (TV)
If you ever come across it on tv, it's not bad. Has a damsel-in-distress, hunky protagonist, buried secrets kind of plotline