This is the main event in Plymouth. About a mile south of downtown, Plimoth Patuxent is an outdoor living history museum on the waterfront, comprising a re-created 1620s English colonial village and a separate Wampanoag homesite — each staffed by people who actually know what they are talking about.
The colonial side has costumed interpreters who play specific documented Pilgrim colonists. They stay in character, speak in 17th-century idiom, and will discuss the precarious state of the colony, the harvest, or the politics of the day as if it is 1627. Ask them about Squanto or Massasoit and you get a genuinely different perspective than the schoolbook version.
The Wampanoag Homesite is staffed by Wampanoag people (not in-character role-play) who explain the Wampanoag way of life, the seasonal rhythms of fishing and farming, and what the arrival of the English actually looked like from their side. The interpretive gap between the two halves of the museum is instructive.
Allow two to three hours for a proper visit. The museum closes in winter months — check the website for the current season schedule.