Auburn Mills Historic District

Auburn Valley State Park (formerly Auburn Heights Preserve) is a state park, located in Yorklyn, Delaware, United States. The park, which is around 360 acres, preserves the former home and estate of the Marshall family as well as portions of the family's former mills alongside the Red Clay Creek and additional land purchased by the state. The preserve contains several miles of trails open to walking, biking, and antique cars, and the state owns conservation easements on 160 acres of privately owned land adjacent to the park to help maintain the park's rural character.The park also features what the state bills as the largest collection of operational steam cars in the world, and a miniature coal-powered train that runs on tracks encircling the estate. The mansion, mills, and steam museum were added to the National Register of Historic Places in 1980 as the Auburn Mills Historic District.

Yorklyn is an unincorporated community in northern New Castle County, Delaware, United States. It lies along Delaware Route 82 northwest of the city of Wilmington, the county seat of New Castle County. Its elevation is 174 feet (53 m). It has a post office with the ZIP code 19736.Yorklyn is home to Auburn Valley State Park which includes the Friends of Auburn Heights Preserve and Marshall Steam Museum with the largest operating collection of Stanley Steamer cars in the world. Also nearby is Ashland Nature Center and the Center for the Creative Arts along with the Yorklyn Recreation Center, commonly referred to as the Yorklyn pool, which houses two pools, tennis courts, and basketball courts. The Auburn Mills Historic District, Garrett Snuff Mills Historic District, Graves Mill Historic District, and Garrett Snuff Mill are listed on the National Register of Historic Places.The National Vulcanized Fiber company was headquartered in Yorklyn, however since bankruptcy in 2008 the plant has been largely torn down and the land purchased by the State of Delaware for Auburn Heights Preserve, a Delaware State Park. Plans call for restoring the original Marshall Brothers Mill into a museum and using some of the original NVF buildings for other uses.

Garrett Snuff Mill, also known as the George W. Helme Company, is a historic snuff tobacco mill complex located at Yorklyn, New Castle County, Delaware. The complex includes 14 contributing buildings built between 1846 and 1901. The buildings are architecturally unified as most are built of brick, with the two earliest mills constructed of stone. The Garrett family introduced the manufacture of snuff to Delaware. The complex housed a snuff manufacturing operation until 1954.It was listed on the National Register of Historic Places in 1978. The buildings were later incorporated into the Garrett Snuff Mills Historic District.

Red Clay Creek is a 12.7-mile-long (20.4 km) tributary of White Clay Creek, running through southeastern Pennsylvania and northern Delaware in the United States. As of 2000, portions of the creek are under wildlife habitat protection.

Garrett Snuff Mills Historic District is a national historic district located at Yorklyn, New Castle County, Delaware. The district encompasses 31 contributing buildings, including the 14 buildings previously listed in the Garrett Snuff Mill. The 17 additional buildings are 19th century domestic buildings associated with the mills. They include the mill owner's and supervisor's houses, a late Victorian frame house, and four rows of workers' housing.It was listed on the National Register of Historic Places in 1980.

Hockessin Friends Meetinghouse is a historic Quaker meeting house and national historic district located at 1501 Old Wilmington Road in Hockessin, New Castle County, in the U.S. state of Delaware. The district encompasses three contributing buildings and one contributing site. It was added to the National Register of Historic Places in 1973.

The Hindu Temple of Delaware is a Hindu temple in Hockessin, Delaware. Inaugurated in 2002, it is the first Hindu temple constructed in Delaware. According to The News Journal, the temple has become "a social and cultural gathering place" for Indian Americans in New Castle County.The temple's main deity is Lakshmi, the goddess of wealth and prosperity.

The A. Armstrong Farm was a historic farm located at Hockessin, New Castle County, Delaware. The property included two contributing buildings. They were a log house with a stone addition added in the 1830s, and a frame tri-level stone and frame barn (c. 1830s). The stuccoed log section was three bays wide, and it had a two-story, two bay stone wing. The farm house and barn were demolished before 2002. It was added to the National Register of Historic Places in 1986.

Ashland Covered Bridge, also known as Ashland Bridge or Barley Mill Road Covered Bridge, is a covered bridge over Red Clay Creek on Barley Mill Road (near the junction of Brackenville Road) in Ashland in New Castle County, Delaware. It was added to the National Register of Historic Places in 1973.

Ashland is an unincorporated community in New Castle County, Delaware, United States. Ashland is located at the intersection of Delaware Route 82 and Barley Mill Road along the Red Clay Creek.

The Samuel P. Dixon Farm is a historic farm near Ashland, New Castle County, Delaware. The property includes three contributing stone buildings: a house, a spring house and a tri-level bank barn. The house is a two-story, four-bay dwelling in two sections. The older section is dated to the late 18th or early 19th century, with an addition before 1830, about the time the barn was built.In the 20th Century, it became part of Ashland Farm, a Du Pont estate. It was added to the National Register of Historic Places in 1986.

Hockessin () is a census-designated place (CDP) in New Castle County, Delaware, United States. The population was 13,527 at the 2010 census.