Wilmington Rail Viaduct

Delaware Colony in the North American Middle Colonies consisted of land on the west bank of the Delaware River Bay. In the early 17th century the area was inhabited by Lenape and possibly the Assateague tribes of Native Americans. The first European settlers were Swedes, who established the colony New Sweden at Fort Christina at present day Wilmington, in 1638. The Dutch captured the colony in 1655 and annexed it to New Netherland to the north. The English took control from the Dutch in 1664, and in 1682, William Penn, the Quaker Proprietor of Pennsylvania to the north, leased "the three lower counties on the Delaware River" from James, the Duke of York (future King James II). The Lower Counties of Delaware were governed as part of Pennsylvania from 1682 until 1701, when the Lower Counties petitioned for and were granted an independent colonial legislature; the two colonies shared the same governor until 1776. The English colonists who settled Delaware were mainly Quakers. In the first half of the 18th century, New Castle became (with Philadelphia) the main port of entry to the new world for a quarter of a million Protestant immigrants from the north of Ireland (referred to as "Scotch-Irish" in America and "Ulster Scots" in Northern Ireland). Delaware had no established religion. With the start of the American Revolutionary War, Delaware's assembly voted to break all ties with both Great Britain and Pennsylvania, forming the state of Delaware.

St. Hedwig's Roman Catholic Church is a historic Roman Catholic church located at Linden and S. Harrison Streets in Wilmington, New Castle County, Delaware. St. Hedwig's serves as the only architecturally visible anchor or centerpiece for the Wilmington Polish community. The parish operated St. Hedwig's High School from 1960 to the 1970s. It was built in 1904, and is a cruciform shaped church constructed of soft gray brick (concrete block with brick veneer) with details in limestone. It is in the late Gothic Revival style. The front facade features a set of three double doors flanked by 80' spires terminating in cross gable spires. It was added to the National Register of Historic Places in 1982.

Harlan & Hollingsworth was a Wilmington, Delaware, firm that constructed ships and railroad cars during the 19th century and into the 20th century.

The Harlan and Hollingsworth Office Building is a historic office building located in Wilmington, New Castle County, Delaware. It was completed in 1912, and stands on the corner of West St. and the Wilmington Rail Viaduct. It is a three-story, detached, rectangular brick-faced building with two small rear wings in the Colonial Revival style. It features two large, decorated copper-faced bay windows projecting from each face of the right corner of the second story.By 1910, existing office facilities at the Harlan Plant of Bethlehem Steel (formerly Harlan and Hollingsworth) had become inadequate, and work started on a new office building. It survived the closing of the Harlan Plant in 1944, and once housed laboratories for Gates Engineering Company. The building was purchased by 100 South West Street Associates in 1991 and restored.It was listed in the National Register of Historic Places in 1979.

The Delaware Sports Museum and Hall of Fame was founded in 1976. Al Cartwright, who helped found it, was its first president and was inducted to its hall of fame in 1980. The Delaware Sports Museum and Hall of Fame is a member of the International Sports Heritage Association. The Delaware Sports Museum and Hall of Fame contains the Izzy Katzman Sports Library, named after a 1993 inductee.

Daniel S. Frawley Stadium is a stadium in Wilmington, Delaware. It is primarily used for baseball, and is the home field of the Wilmington Blue Rocks minor league baseball team. The park was originally known as Legends Stadium when it was built in 1993. It was renamed in 1994 for Wilmington mayor Daniel S. Frawley, who had pushed for a return of the Blue Rocks. The field is named separately for Judy Johnson, a local Negro league baseball star.

Public School No. 19, also known as St. Hedwig's High School, is a historic elementary school building located at Wilmington, New Castle County, Delaware. It was built in 1881, and is a two-story, cruciform-shaped brick building in the Italianate style. It has a low hipped roof and a heavy wood pediment is trimmed with elongated dentils and bracketed cornice returns. It operated as a public school until leased to St. Hedwig's Roman Catholic Church for use as a Catholic high school. St. Hedwig's High School closed in the 1970s and the building converted to offices.It was added to the National Register of Historic Places in 1984.

State of Pennsylvania was a steamboat that was built in Wilmington, Delaware in 1923, along with her identical sister ship State of Delaware. The steamboat operated on the Delaware River between her homeport of Wilmington and the cities of Chester and Philadelphia in Pennsylvania, as well as Riverview Park in Pennsville, New Jersey. Regular service on these routes was stopped in 1960. The boat foundered near her dock on the Christina River in 1970. In 1979, she was listed on the National Register of Historic Places. In 1988, the upper decks were destroyed by a deliberately set fire, and in 2005 the hull was removed and scrapped as a hazard to navigation, all without the ship being raised.

Chase Center on the Riverfront is a 92,000 square foot convention center in Wilmington, Delaware. It hosts various local concerts, conventions, and banquets for the Wilmington area.

The Quaker Hill Historic District is a national historic district located at Wilmington, New Castle County, Delaware. It encompasses 151 contributing buildings in a residential neighborhood west of the central business district of Wilmington. The district includes 19th-century residential structures of all classes, along with several 19th-and 20th-century commercial structures. The predominant structures are three-story rowhouse dwellings in a variety of popular styles including Second Empire, Italianate, and Gothic Revival. Notable non-residential buildings include the Quaker Meetinghouse and Cemetery, St. Peter's Cathedral and Rectory (1816), Union Methodist Church, and New Mount Bethel Baptist Church It was added to the National Register of Historic Places in 1979, with a boundary increase in 1985.

The Brandywine Building is a 19-story, 260 foot high rise building in downtown Wilmington, Delaware. It contains primarily office and commercial space. The building was originally built in 1970 as an expansion for DuPont's Headquarters, but is now mostly used by Citi.

The River Tower at Christina Landing is a high rise located in Wilmington, Delaware. It is the tallest residential building in both the city of Wilmington and the state of Delaware, rising 25 stories with a 13th floor, and 295 ft (90m.). The Building was constructed in 2005, and opened in 2007. The tower was designed by Stantec Architecture, Inc.This skyscraper's main purpose is as a residential building. It contains a pool, Jacuzzi, and a sitting area on the roof. There is also space reserved for parties. The skyscraper also has eight stories of parking garage for residents who live there.