Borderland State Park is an American history and nature preserve with public recreational features located in the towns of Easton and Sharon, Massachusetts.

There they built a mansion that includes Blanche Ames' studio, which still stands and created a nature preserve with woodland paths and roadways and man-made ponds.

[6] The park features mansion tours, a visitors center, pond fishing and canoeing, ice skating, sledding, and disc golf.

[11] A fictionalized version of the park is featured in the novels Disappearance at Devil's Rock and Survivor Song by Paul Tremblay.

Interiors, particularly the library, were featured in the 2019 Rian Johnson film Knives Out as the home of mystery writer and murder victim Harlan Thrombey.