Hartwood Acres Park
Hartwood Acres Park is a 629-acre (2.55 km 2) county park in Allegheny County, Pennsylvania in the United States. Hartwood is considered the crown jewel of the county's 12,000-acre (49 km 2) network of nine distinct parks. Established in 1969, its special feature is one of the largest and most spectacular country estates in the region. Hartwood consists of a stately Tudor mansion (erected in 1929), public gardens, a cottage, a stable complex, and a gate lodge (erected in 1927). The mansion, designed by Alfred Hopkins for John and Mary Flinn Lawrence, houses a collection of original English and American antiques. Hartwood is sited 10 miles (16 km) northeast of Downtown Pittsburgh on largely forested land in both Hampton and Indiana townships. The park also offers a large-stage concert area for music and summer theater and 30 miles (48 km) of trails"horse riding, walking, hiking, biking, and cross country skiing. Hartwood is especially popular during the holidays because of its annual "Festival of Lights," a large outdoor light display.

Mary Flinn Lawrence, a Pittsburgh philanthropist, created Hartwood with money she inherited from her father, William Flinn. In the 1920s, she and her husband John Lawrence asked architect Alfred Hopkins to borrow design elements from a manor house the Lawrences had seen in Broadway, Oxfordshire, England. The result was a stately 31-room slate-roofed stone house constructed around a great hall. Mary transformed the grounds of her estate into an equestrian arts showcase, building riding trails that extend for miles, show rings, steeplechase layouts, and ivy-covered stables. The stalls of the stables are made of varnished oak. The Allegheny Parks Commission bought 400 acres (1.6 km 2) of land and riding trails from the Lawrences in 1969. Mary's death on October 29, 1974 permitted her Hartwood estate to open to the general public.

Usage in popular culture
A large segment of the 1996 TV film The Christmas Tree , directed by Sally Field, was filmed at Hartwood. Some scenes in the 2006 film 10th & Wolf were filmed in the Hartwood Mansion's great hall. The pilot episode for the Twentieth Century Fox Television adaptation of Joe Hill's Eisner Award-winning graphic novel, Locke & Key , is scheduled to be filmed at Hartwood Mansion in early 2011.

Eleven large, outdoor sculptures by nationally-known artists co-exist with visitors to the park as part of the permanent collection.
  • Coronet, 1978, Lila Katzen
  • Monumental Holistic Image IV, 1980, Betty Gold
  • Ring Series #5, 1983, Fletcher Benton
  • Cloudt, 1982, Ron Bennett
  • Stretch, 1980-81, Charles Ginnever
  • Hence, 1977, Clement Meadmore
  • Manly, 1980, Lyman Kipp
  • Large Escargot, 1982, David Hayes
  • Mobius Trip X, 1966”“83, Peter Forakis
  • Large Snail, 1965, Tillie Speyer
  • Hidden in the Obvious, Stanley Boyd Spotts
  • Totem, Lamina, Limbus, 1979, Jack Youngerman