Jacob Broom House

Brandywine Manufacturers Sunday School, also known as Sunday School and Hagley Office, is a historic Sunday school building located near Wilmington, New Castle County, Delaware. It was built in 1817, and is a one-story, rectangular stone building. It measures 31 feet by 65 feet and features an Ionic order columned portico and school bell tower. Also on the property is a contributing spring house. It was built for workers, old and young, to learn the basics of reading, writing, and "ciphering," and remained in use as a school until 1851. From 1902 to 1921, it was the Hagley Yard office of the E. I. du Pont de Nemours Company. It was then converted to a private dwelling.It was added to the National Register of Historic Places in 1972.

From 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives founded by Eleuthère Irénée du Pont, which grew into the DuPont company. The name also refers to the house on the hill above the mills, which was the first du Pont family home in America. In 1957 the site became an outdoor museum when the Hagley Museum and Library was founded. The site was declared a National Historic Landmark in 1966.

The Hagley Museum and Library is a nonprofit educational institution in unincorporated New Castle County, Delaware, near Wilmington. Covering more than 235 acres (95 ha) along the banks of the Brandywine Creek, the museum and grounds include the first du Pont family home and garden in the United States, the powder yards, and a 19th-century machine shop. On the hillside below the mansion lies a Renaissance Revival garden, with terraces and statuary, created in the 1920s by Louise Evelina du Pont Crowninshield (1877–1958).

Lower Louviers and Chicken Alley, also known as Louviers and Duck Street, is a historic home located near Wilmington in New Castle County, Delaware. It was added to the National Register of Historic Places in 1972.

Louviers, also known as Upper Louviers and Black Gates, was a historic home located at Wilmington in New Castle County, Delaware.

Husbands Run is a 1.71 mi (2.75 km) long tributary to Brandywine Creek in New Castle County, Delaware north of Wilmington, Delaware. It rises in Woodley Park between the Tavistock Woodbrook, Sharpley and Edenridge neighborhoods. It flows through DuPont Country Club, where it is joined by the Willow Run and mouths north of Delaware Route 141. The Husbands were early settlers to the region.

The DuPont Experimental Station is the main research and development site of DuPont and Chemours, located along Delaware Route 141. The site map is shown in the Figure and the buildings are numbered. The map is not fixed in time in that not all of the building shown existed in the same time frame. Some were demolished before other were built. The site was initiated along the banks of the Brandywine River so the lowest numbers are in the lower left of the map. Expansion has taken place toward the upper right, slowly displacing the DuPont Country Club, so those are the more modern buildings and the more recent history of the site. Each of the business units of the company have had research facilities at the Experimental Station, so the inventions listed below reflect the nature of the research carried out in each building.

The DuPont Experimental Station is the largest research and development facility of DuPont. Located on the banks of the Brandywine Creek in Wilmington, Delaware, it is home to some of the most important discoveries of the modern chemical industry.

Along Delaware Route 141 there are a number of historic sites that trace the history of both the Du Pont family and the DuPont company. At the southwest end is DuPont’s Chestnut Run Plaza and at the northeastern end is the Alfred I. duPont Hospital for Children. Between are a number of sites on the National Register of Historic Places. The historic locations include equal portion of the history of the American chemical industry, the role of the DuPont family - their estates and gardens - and the philanthropy of a distinguished American family.

Walker's Mill and Walker's Bank, also known as Simsville, Siddall's Mill, and "Big White Mill", is a historic spinning cotton mill and worker's dwelling block located near Wilmington, New Castle County, Delaware. Walker's Mill was built between 1813 and 1815, and is a 2+1⁄2-story, "T"-shaped, stone building.

Breck's Mill Area, also known as Breck's Mill Area-Henry Clay Village Historic District, is a national historic district located along Brandywine Creek in unincorporated New Castle County, Delaware, near Wilmington. It encompasses 56 contributing buildings, five contributing sites, and three contributing structures. The district encompasses The Mill, The Workers' houses, and The Mill Owner's Home. Breck's Mill was built in 1813 and rebuilt in 1846 after a fire. It is a three-story, stone structure measuring 55 feet by 43 feet. It features a stone bell tower with a top floor of brick. The Henry Clay Village area includes small single or double workers' houses, the Charles I. du Pont house (1823), Ernest du Pont house (1916), William F. Raskob house , Hagee's Tavern, Greenhill Presbyterian Church, and the original building for the Alexis I. duPont High School (1893). "Rokeby" was built in 1836, and is a two-story, rectangular dwelling in a late Federal style. It measures 55 feet wide and 26 feet, 4 inches, deep, and features a two-story portico overlooking the Brandywine. It was built by mill owner William Breck for his new wife Gabrielle du Pont and is thought to be modeled on Louviers. The mill closed in 1854. It has been a recreational center off and on since 1890. Breck's Mill houses the post office for Montchanin, Delaware, Somerville Manning Gallery, and André Harvey's sculpture studio. It was added to the National Register of Historic Places in 1971 and amended in 1988.

St. Joseph on the Brandywine, originally Saint Joseph's Church until St. Joseph's Church- Wilmington was built in 1947, is a parish of the Roman Catholic Church in Greenville, New Castle County, Delaware, in the Diocese of Wilmington. It is noted for its historic parish church complex and national historic district located on Old Church Road. Since 2002 its old convent building has housed the Diocesan Archives of Wilmington, with records spanning the last two centuries of church activity in Delaware. It is also the home parish of the 46th President of the United States, Joe Biden.