Barry Schwartz—co-founder of fashion juggernaut Calvin Klein—listed his equestrian estate in lower New York state this winter. The property is called Stonewall Farm, and it occupies a significant chunk of Westchester County, and carries a $100 million price tag to prove it.

The estate is anchored by a grand plantation-style house that was completed in 2004. The façade of the house is dominated by a series of two-story columns, and a second-floor balcony. Clapboard walls and a slate roof support the architectural conceit; the slate was sourced from the Yale School of Divinity during its lengthy restoration.

The interior living spaces span some 24,000 square feet. Despite the home’s considerable scale, it manages to be invitational and very comfortable over all. The postmodern design sensibility blends rusticity, formal traditionalism, and contemporary refinement by turns; in the kitchen, for example, farmhouse design elements combine with the wide-plank hardwood for a very unpretentious result. Standout spaces and details include a library with a spiral staircase and a magnificent two-tone fireplace and accent wall, and the interior Zen garden, accessible at one point via sliding shoji, and situated at the top of the stairs, in the second floor gallery.

The property exterior is dominated by the estate’s overall purpose as an equestrian breeding ground and training center. The estate’s 740 acres make it the largest in Westchester—there are 18 parcels in this property—and there are private roads, trails, pastures and paddocks, with separate yearling and broodmare barns, a cattle farm, a spring house, ponds, orchards, and staff quarters among the features and structures included.