New Hampshire Bank Building

The Portsmouth Downtown Historic District encompasses the historic urban core of Portsmouth, New Hampshire. With a history dating to the 17th century, Portsmouth was New Hampshire's principal seaport and the center of its economy for many decades, and the architecture of its urban center is reflective of nearly four centuries of history. The district is roughly L-shaped, radiating from the downtown Market Square area to South Street in the south and Madison and Columbia streets in the west, with more than 1,200 historically significant buildings. It was listed on the National Register of Historic Places in 2017. The district includes 35 previous listings on the National Register, and five National Historic Landmarks.

The Portsmouth Athenæum is an independent membership library, gallery, and museum in Portsmouth, New Hampshire, United States. It preserves and provides access to an extensive collection of manuscripts, rare books, photographs, artworks and artifacts, and digital collections related to local history and genealogy, in addition to a circulating library for its membership. As an intellectual center of the community, it sponsors exhibitions, concerts, lectures, and other educational and cultural programs. The building, dating to 1805, has been listed on the National Register of Historic Places since 1973.

The North Church of Portsmouth, New Hampshire, United States, is a historic Congregational church located in Market Square. Sited directly across from the Portsmouth Athenæum, it features an Italianate edifice and a steeple visible from most of the city, the Piscataqua River, and communities on its western bank in Maine. Its spire has been referred to as Portsmouth's "landmark of record". The church is home to Portsmouth's United Church of Christ congregation.

South Parish is the historic name of a church at 292 State Street in Portsmouth, New Hampshire, in the United States. The church building, built in 1824-26, is one of the earliest examples of Classical Revival architecture in New England, and was listed on the National Register of Historic Places in 1979.Now known as South Church or South Unitarian Universalist Church, the congregation is a covenanting member of the Unitarian Universalist Association, and is an accredited Green Sanctuary. Unitarian Universalism is a liberal religion with Jewish-Christian roots. It has no creed. It affirms the worth of human beings, advocates freedom of belief and the search for advancing truth, and tries to provide a warm, open, supportive community for people who believe that ethical living is the supreme witness of religion. The church is a Welcoming Congregation for bisexual, gay, lesbian, and transgender people.

The Governor John Langdon House, also known as Governor John Langdon Mansion, is a historic mansion house at 143 Pleasant Street in Portsmouth, New Hampshire, United States. It was built in 1784 by Founding Father John Langdon (1741-1819), a merchant, shipbuilder, American Revolutionary War general, signer of the United States Constitution, and three-term President (now termed governor) of New Hampshire. The house he built for his family showed his status as Portsmouth's leading citizen and received praise from George Washington, who visited there in 1789. Its reception rooms are ornamented by elaborate wood carving in the rococo style. The house was declared a National Historic Landmark in 1974, and is now a house museum operated by Historic New England. The house Langdon had built resembles typical late Georgian houses, with five bays across, a center entry, and four rooms on each floor, flanking a grand central hall and stairway. It is built on a larger and grander scale than most houses, and has very high quality interior woodwork. The interior joinery is attributed to Ebenezer Clifford, a leading woodworker of the Portsmouth area. The main entry is also particularly elaborate with a large door flanked by pairs of engaged columns, and sheltered by a semi-circular portico supported by Corinthian columns and topped by a balustrade.After Langdon's death in 1819, his lone surviving daughter continued to use the house, but did not live there. Between 1833 and 1902 the house passed through several hands. In the 1850s a fire severely damaged the southwest corner of the house, which was reconstructed. In 1877 the house came into the hands of Frances E. Bassett, a descendant of John Langdon's brother Woodbury. Her son and daughter-in-law, Woodbury and Elizabeth Langdon, converted the house into a Colonial Revival showplace, adding a two-story wing designed by McKim, Mead & White whose details harmonize well with the original structure, and include a dining room based on one built by the ancestral Woodbury Langdon and preserved in the Rockingham Hotel. Elizabeth Langdon deeded the property to Historic New England in 1947.The house was declared a National Historic Landmark in 1974. It is open to the public for tours on weekends from June to October, and the grounds are available for functions.

St. John's Church is a historic church at 101 Chapel Street in Portsmouth, New Hampshire, United States. The brick building was designed by Alexander Parris and built in 1807; it was the first brick church in the state of New Hampshire, and is a rare surviving early design by Parris. The building was listed on the National Register of Historic Places in 1978. The church is home to an Episcopal congregation organized in 1732, with roots in the city's 17th-century founding.

The Music Hall is an 895-seat theater located at 28 Chestnut Street in Portsmouth, New Hampshire, in the United States. Built in 1878, The Music Hall claims to be the oldest operating theater in New Hampshire and the 14th oldest in the United States. An independent venue that offers music, readings, comedy, and cinema, The Music Hall brings in 130,000 visitors a year. In the past it has hosted musicians like Tony Bennett and authors like Dan Brown.

The Portsmouth African Burying Ground is a memorial park on Chestnut Street in Portsmouth, New Hampshire, United States. The memorial park sits on top of an 18th century gravesite containing almost two hundred freed and enslaved African people. It is the only archeologically verified African burying ground for the time period in New England.The site was discovered in 2003 when construction workers discovered the buried while trying to dig a manhole. Remains of eight individuals were exhumed and determined to be of African descent. Of the eight remains, four were men, one was a female, one a child, and the rest were unable to be determined.

The Franklin Block is a historic commercial building at 75 Congress Street in downtown Portsmouth, New Hampshire. Built in 1879, this three-story brick building is the largest Victorian-era building standing in the city. It occupies the city block between Fleet Street and Vaughan Mall, a former street that is now a pedestrian mall. It was listed on the National Register of Historic Places in 1984.

The Warner House, formerly known as the MacPheadris–Warner House, is a historic house museum at 150 Daniel Street (corner of Chapel Street) in Portsmouth, New Hampshire, United States. Built 1716–1718, it is the oldest, urban brick house in northern New England, and is one of the finest early-Georgian brick houses in New England. It was declared a National Historic Landmark in 1960, and is listed on the National Register of Historic Places.The Warner House is a 2+1⁄2-story brick structure, with walls 15 inches (38 cm) thick laid in Flemish bond. A belt course separates the two main floors, and the slightly overhanging cornice is studded with modillions. It now has a gambrel roof; this is a later modification to what was originally a pair of side gable pitches with a deep valley between them. At the break line in the gambrel there is a low balustrade. The cupola was listed in the original 1716 bill by John Drew, master-builder. The interior of the house follows a typical Georgian four-room plan, with an added kitchen wing in the rear. The walls of the central hall and stairway are decorated with four murals that are the oldest, extant Anglo-American wall murals in the country.The house was built for Capt. Archibald Macpheadris, a Scots-Irish sea captain who settled in Portsmouth. He married Sarah Wentworth, daughter of John Wentworth (Lieutenant-Governor). Macpheadris died in 1729, and the house passed to his wife and children.

The Moffatt-Ladd House, also known as the William Whipple House, is a historic house museum and National Historic Landmark in Portsmouth, New Hampshire, United States. The 1763 Georgian house was the home of William Whipple (1730–1785), a Founding Father , a signer of the Declaration of Independence and Revolutionary War general. The house is now owned by the National Society of Colonial Dames in New Hampshire, and is open to the public. Among the contents are Whipple's sword and other personal items, along with a portrait of him. Outside is a horse chestnut tree that Whipple planted in 1776 with seeds that he brought back from Philadelphia. The house was declared a National Historic Landmark in 1968.

The Rockingham Hotel is a historic former hotel and contemporary condominium at 401 State Street in Portsmouth, New Hampshire, United States. Built in 1885, it is a prominent early example of Colonial Revival architecture, built in part in homage to Woodbury Langdon, whose 1785 home occupied the site. Langdon's home and the hotel both played host to leading figures of their day, and the hotel was one of the finest in northern New England. The hotel, now converted to condominiums, was added to the National Register of Historic Places in 1982.