The Mount Morris Park neighborhood is a residential area in central Harlem, bounded by 125th and 117th Streets from north to south, by Adam Clayton Powell Jr. Boulevard to the west, and by Marcus Garvey Memorial Park to the east. The park, known as Mount Morris Park until 1973, has always been the centerpiece of the neighborhood. Besides the park, the area is characterized by attractive low-scale rowhouses, townhouses and institutional buildings, including many churches. Stylistically, most of the architecture found in Mount Morris Park is Romanesque Revival, French Neo-Grec and Queen Anne, as well as Classical and Renaissance. There is also much transition among styles in the architecture here, which results in a charming, eclectic mix, and the neighborhood retains a strong turn-of-the-20th-century architectural character today. With the opening of the elevated transit line in Harlem in 1872, development in Manhattan pushed northward into former farmlands. Speculative building began in 1878, and several booms in Harlem real estate soon followed. New York City in the 1880s and 1890s saw some of the most elegant construction designed by prominent local architects, and this neighborhood was no exception. The row of houses that line Mount Morris Park West and face the park were compared with Fifth Avenue mansions in 1903 by the New York Herald. At the turn of the 20th century, German Protestants and Jews commissioned many church and synagogue buildings that survive today. By 1920 the area had become a middle-class neighborhood of mainly Jewish, Caribbean and African-American families. The new residents acquired and adapted institutional and residential buildings to suit their religious and cultural needs, while some of the single-family houses were converted to multi-family. The neighborhood struggled during the Depression and ensuing decades, but the quality construction of earlier years remained remarkably extant. In 1971, New York City designated the Mount Morris Park Historic District, and in 1973 the district was placed on the National Register, with its boundaries expanded in 1996. Since that time, the area has been enjoying a revival thanks in part to the overall exceptional craftsmanship of the built environment.

Graham Court Apartments, 1933. More than those of any other Harlem apartment house, Graham Court's expansive suites suggest the ideal of an entire row house set at a single level. It is still considered Harlem's finest luxury apartment house. Graham Court's underground stable, situated directly below the court, was considered a major amenity for tenants, as was the roof's warren of extra servants' rooms. The typical apartment featured a parlor and dining room suite with a pantry, kitchen, and maid's room, four or more bedrooms, and up to three baths. The illusion of being in a house is reinforced by the separation of family bedrooms along a private hall beyond the public spaces and the similar isolation of the kitchen and servants' quarters. The building was erected by William Waldorf Astor, one of the world's richest men and one of the largest owners of Harlem real estate. Even today, his WWA monogram embellishes the structure. The Astor family owned Graham Court until 1928; the first African Americans moved in five years later. The building's new owners rented to black tenants but scaled back services and staff, divided some apartments, and raised Depression-era rents. New residents included Dr. Cyril Harold Dolly, assistant visiting physician at Harlem Hospital, who helped to found the Consolidated Tenants League in response to these changes. The writer and anthropologist Zora Neale Hurston was a guest here for an extended period of time.

In the closing decades of the 19th century, New York underwent a profound physical and cultural transformation. Fueled by the wealth of the exploding financial and manufacturing sectors, the city rapidly evolved into a world-class metropolis. The bold ambitions of civic and business leaders, architects, and engineers of the era manifested in landmarks such as the vast Cathedral of St. John the Divine, the stately U.S. Custom House, the towering Municipal Building, and the original terminus of New York City’s first official subway line—the ornate City Hall stop. The sweeping interior spaces common to all of these structures, and hundreds of others, depended upon a venerable Mediterranean building technology adapted to contemporary American construction: arched tile ceilings—or vaults—that were not only self-supporting but could also bear the weight of floors or roofs above them. These vaults were designed and built by a single New York firm, founded by Spanish immigrant Rafael Guastavino (1842-1908) and later headed by his son Rafael Jr. (1872-1950). The Guastavinos’ patented system for building domes and vaults involved multiple layers of thin ceramic tiles bonded with quick-drying mortar. The resulting structures were not only exceptionally strong, but also lightweight, easy to build, and inherently beautiful, thanks to intricate patterns of exposed tile that formed finished, decorative surfaces. Guastavino vaults figured prominently in more than 1,000 projects across the nation, including 200 in Manhattan alone. During its 73-year history, the Guastavino Company helped build some of the most impressive interior spaces in America—veritable palaces for the people. This list based on MCNY's exhibition Palaces for the People, contains many of Guastavino's masterpieces in the five boroughs, both those that remain and those that have been lost to the wrecking ball.

Graham Court Apartments 1923–1937 Adam Clayton Powell Jr. Boulevard Designed by Clinton & Russell, 1899–1901 This complex was built by major Harlem landowner William Waldorf Astor as a luxury apartment house. Designed in the Italian Renaissance style, the complex features a grand gated-entryway leading to a large, landscaped interior court which provides an abundance of light and air as well as passive recreation space for the residents. Several years after this building was completed the architects designed a similarly luxurious sister building, the Apthorp Apartments, on Manhattan’s Upper West Side. Graham Court was designated a New York City landmark in 1984.

Graham Court Apartments, 1905. Graham Court is large luxury apartment building that was financed by William Waldorf Astor and designed by the firm of Clinton & Russell in 1901. Constructed during a period of massive residential development in Harlem, the Italian Renaissance structure is quadrangle with the four sides surrounding a grand central courtyard. The apartments were marketed for middle and upper class residents. These tenants were entirely white until Graham Court was integrated in the late 1920s (one of the last major apartment buildings in Harlem to do so). It became a fashionable address for Harlem's black residents in the 1930s and 1940s. The building was designated a landmark in 1984 and has undergone renovations in the last few decades to restore some of the grandeur lost in the financially chaotic decades between 1960 and and 1990.