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 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 Mark Wentworth House, also known as the Gov. John Wentworth House, is a historic house at 346 Pleasant Street in Portsmouth, New Hampshire.
 The 2-1/2 story wood-frame mansion was built in 1763 by Henry Appleton, a merchant, who sold it to Mark Hunking Wentworth, one of New Hampshire's wealthiest merchants and landowners, the following year.
 Wentworth's son John was appointed Royal Governor of New Hampshire in 1767, and occupied the house from then until his departure on the eve of the American Revolutionary War in 1775.
 Despite the governor's occupancy, Mark Wentworth transferred the property to his daughter Anna Fisher in 1770.
 It was sold out of the Wentworth family in 1797, and repurchased by Ebenezer Wentworth in 1810.
 In the early 1900s Wentworth descendants adapted the property for use as an elder care facility, a role it continues to serve today.
The Whipple House is a historic house museum at 4 Pleasant Street in Ashland, New Hampshire.
 The story Cape style house was built c. 1825-1850, and is relatively architecturally undistinguished.
 It is significant for its association with George Hoyt Whipple (1878-1976), a Nobel Prize-winning doctor and pathologist.
 It is in this house that Whipple was born in 1879.
 Whipple gave the house to the town in 1970, and it is now operated by the Ashland Historical Society as a museum, open during the warmer months.
The Chamberlin House is a historic house at 44 Pleasant Street in Concord, New Hampshire.
 The 2.5 story wood frame Queen Anne Victorian was built in 1886 by Horace Chamberlin, superintendent of the local division of the Boston and Maine Railroad.
 Although the house was probably built from mail-order plans (a popular way to acquire building plans at the time), it exhibits a wealth of Queen Anne and Shingle Style decoration, both inside and out.
 The house has a hip roof, but there are numerous projections, including a turret with conical roof on the right side of the front facade.
 The left side has a single story porch, decorated with Stick style balustrades both below and above the roof.
 Above the porch is a projecting bay window which is topped by a large gable that extends over the splayed corners of the bay, where there are curved brackets.
 The gable front is sheathed in decoratively cut shingles, with a small square window in the center.
The Downtown Concord Historic District encompasses most of the commercial heart of downtown Concord, New Hampshire, United States.
 Incorporated in 1734, Concord became the state capital in 1808 and the seat of Merrimack County in 1823.
 Economic growth followed, due in part to these government institutions and also to the rise of industry along the Merrimack River, which flows through the city east of the downtown area, and the arrival in the 1840s of the railroad.
 The New Hampshire State House was built in 1819 south of the traditional center of the city (now the Concord Historic District), and the commercial heart of the city began to take shape along the First New Hampshire Turnpike south of the State House (now Main Street).
 The district was listed on the National Register of Historic Places in 2000.
The Christian Science Pleasant View Home is a historic senior citizen residential facility located at 227 Pleasant Street in Concord, New Hampshire, in the United States, It was built in 1927 by the Christian Science Board of Directors as a retirement home for aged Christian Science practitioners and other workers in the cause of Christian Science and occupies the site of "Pleasant View", Mary Baker Eddy's last home before moving to Chestnut Hill, Massachusetts, in 1908.
 It is now Pleasant View Retirement, a senior independent living facility.
 On September 19, 1984, it was added to the National Register of Historic Places.
The Concord Civic District consists of a collection of local and state civic buildings centered on the New Hampshire State House in Concord, New Hampshire.
 In addition to the State House, the district includes the Legislative Office Building, New Hampshire State Library, Concord City Hall, Concord Community Center, New Hampshire Historical Society, State House Annex, and the Concord Public Library.
 It also includes statuary and memorial objects placed on the grounds of the State House.
 The buildings, although architecturally different, are predominantly made out of locally quarried granite, and their grounds are landscaped in similar ways.
 The district was added to the National Register of Historic Places in 1983.
The Lewis Downing Jr.
 House is a historic house at 33 Pleasant Street in Concord, New Hampshire.
 This 2.5 story wood frame Italianate house was built in 1851 for Lewis Downing Jr., president of the Abbot-Downing Company, a nationally known manufacturer of coaches, and is the only surviving building associated with that business.
 The house is basically rectangular, with cross gables sections projecting from the sides.
 Its notable features include the paired brackets in the eaves, the chimneys, and the side porch, which retains some of its original styling despite 20th century repairs and replacements.
 A late-19th century garage at the rear of the property also has decorative touches such as bracketed eaves, and a side entrance framed by arched latticework.
Abbot-Downing Company was a coach and carriage builder in Concord, New Hampshire, which became known throughout the United States for its products — in particular the first Concord coach.
The New Hampshire State Union Armory is a historic armory building at 60 Pleasant Street in Manchester, New Hampshire.
 Built in 1904, this large brick building was the first armory building in the state.
 The brick Romanesque building has two portions: a head house (which faces Pleasant Street), and a drill hall, located behind the head house and extending to West Central Street.
 It has a fortress-like main entrance, in a projecting section from its main facade that rises two stories and is framed by massive brick pilasters.

Question: What historic house at 33 Pleasant Street in Concord, New Hampshire, was built for the president of a company known for the first Concord coach? 
Answer: The Lewis Downing Jr. House