Armstrong-Walker House

Achmester was a historic home and national historic district located near Middletown, New Castle County, Delaware. It encompassed four contributing buildings and two contributing structures. Achmester was built in 1829, and was a 1+1⁄2-story, single pile "Peach Mansion." It consisted of a five bay frame main block with a five bay gable end addition, and five bay rear service ell. It had a gable roof with dormers and sat on a stone foundation. The façade featured simple box cornices and dormers decorated at a later date with Gothic Revival sawnwork trim, pendents, and vergeboards. The contributing outbuildings consist of a cow barn, shed, milk house, granary, and smokehouse. It was built by Richard Mansfield, a founder of Middletown Academy.It was listed on the National Register of Historic Places in 1979. It was demolished in 2022.

S. Holton Farm is a historic home located near Middletown, New Castle County, Delaware. It was built about 1850, and is a three-story ell-shaped frame dwelling with a two-story rear ell in the Greek Revival idiom and Georgian "I"-form. It has a five bay front facade, and shallow-pitched hipped roof with two square brick chimneys. Also on the property are a contributing granary and two milkhouses.It was listed on the National Register of Historic Places in 1985.

Drawyer Creek is a 6.26 mi (10.07 km) long tributary to the Appoquinimink River in New Castle County, Delaware. Drawyer Creek is a mostly tidal tributary to the Appoquinimink River and is non-tidal above Shallcross Lake. Old Drawyers Church, a historic church, is located to the south of the creek.

Greenlawn, also known as the Outten Davis House and William Brady House, was a historic home located at Middletown, New Castle County, Delaware. It was built about 1810, and radically altered about 1860. It was a two-story, five-bay, brick dwelling with cross-gable roof with dormers. It had a rear brick ell with attached wing. It featured a three-bay front porch, large brackets, a widow's walk on the roof, and ornate chimney caps. It was originally built in the Late Georgian style, then modified with Late Victorian details.It was listed on the National Register of Historic Places in 1973 and demolished in about 1985.

Fields Heirs, also known as Fields House, was a historic home located at Middletown, New Castle County, Delaware. It was built about 1820, and was a 2+1⁄2-story, five-bay by two-bay center-hall plan residence with a 1+1⁄2-story rear wing forming an L-shaped house. It sat on a stone foundation and had a gable roof. Also on the property was a contributing drive-through granary.It was listed on the National Register of Historic Places in 1985 and demolished between 1992 and 2002.

Weston, also known as the S. Brady Farm, is a historic home and farm located near Middletown, New Castle County, Delaware. It was listed on the National Register of Historic Places in 1985.

Choptank, also known as the J. Clayton Farm, is a historic home located near Middletown, New Castle County, Delaware. It was built about 1850, and is a three-story, five-by-two bay, timber-frame structure on a brick foundation. It has a low-hipped roof. Also on the property are a contributing large barn, corn crib, and shed.It was listed on the National Register of Historic Places in 1985.

The Middletown Academy was a historic school located in Middletown, Delaware. Founded in 1826 through lottery subscription and constructed the following year, it became part of the public school system in 1876 and was closed in 1929. The school building survives and was listed on the National Register of Historic Places on December 5, 1972. It presently houses the town historical society and chamber of commerce.

Maples is a historic building located near Middletown, New Castle County, Delaware. It was built about 1855, and is a two-story, L-shaped, frame dwelling. It is in the Delaware vernacular style with Greek Revival and Second Empire style details. The building has a wraparound porch with flat roof, a cross-gable roof, and interior end chimneys.It was listed on the National Register of Historic Places in 1978.

Middletown Historic District is a national historic district located at Middletown, New Castle County, Delaware. It encompasses 187 contributing buildings in the central business district and surrounding residential areas of Middletown. It is centered on the Middletown crossroads established in the 17th century. Residential buildings include notable examples of the Late Victorian and Federal styles. Notable non-residential buildings include the Witherspoon Inn (1761), S. M. Reynolds and Company (1871), Delaware Trust Company (1918), People's National Bank (1884), and Forest Presbyterian Church (1851). Also located in the district is the separately listed Middletown Academy or Town Hall (1827).It was listed on the National Register of Historic Places in 1978.

Philip Reading Tannery, also known as Green's Barn, is a historic tannery building located at Middletown, New Castle County, Delaware. It was built about 1780, and is a two-story, brick structure measuring 106 feet long by 30 feet wide. It is a rare surviving 18th-century industrial building that has been converted into a cow barn. It was listed on the National Register of Historic Places in 1978.

Middletown is a town in New Castle County, Delaware, United States. According to the 2021 Census, the population of the town is 24,164.