Information: - The Northeastern United States, also referred to as the American Northeast or simply the Northeast, is a geographical region of the United States of America bordered to the north by Canada, to the east by the Atlantic Ocean, to the south by the Southern United States, and to the west by the Midwestern United States. The Northeast is one of the four regions defined by the Census Bureau for the collection and analysis of statistics. The Census Bureau-defined region has a total area of with of that being land mass. Though lacking a unified cultural identity, the Northeastern region is the nation's most economically developed, densely populated, and culturally diverse region. Of the nation's four census regions, the Northeast is the second most urban, with 85 percent of its population residing in urban areas, led by the West with 90 percent. - The Philadelphia Museum of Art is an art museum originally chartered in 1876 for the Centennial Exposition. The main museum building was completed in 1928 on Fairmount, a hill located at the northwest end of Philadelphia's Benjamin Franklin Parkway. The museum administers collections containing over 240,000 objects including major holdings of European, American and Asian origin. The various classes of artwork include sculpture, paintings, prints, drawings, photographs, armor and decorative arts. The attendance figure for the museum was 751,797 in 2015, an increase of 17% from the prior year, ranking it among the top one hundred most-visited art museums in the world. The museum is also one of the largest art museums in the world based on gallery space. - Philadelphia is the largest city in the Commonwealth of Pennsylvania and the fifth-most populous city in the United States, with an estimated population of 1,567,442 and more than 6million in the seventh-largest metropolitan statistical area, . Philadelphia is the economic and cultural anchor of the Delaware Valleya region located in the Northeastern United States at the confluence of the Delaware and Schuylkill rivers with 7.2million people residing in the eighth-largest combined statistical area in the United States. - The Schuylkill River (, locally ) is an important river in central and eastern Pennsylvania. Two of its tributaries drain parts of the Pocono Mountains in the east and Coal Region in the center of the state. It flows for before joining the Delaware River as its largest tributary, in Philadelphia. - Benjamin Franklin Parkway is a scenic boulevard that runs through the cultural heart of Philadelphia, Pennsylvania. Named for favorite son Benjamin Franklin, the mile-long Parkway cuts diagonally across the grid plan pattern of Center City's Northwest quadrant. It starts at Philadelphia City Hall, curves around Logan Circle, and ends before the Philadelphia Museum of Art. - The Eastern United States, commonly referred to as the American East or simply the East, is a region roughly coinciding with the boundaries of the United States established in the 1783 Treaty of Paris, which bounded the new country to the west along the Mississippi River. It is geographically diverse, spanning the Northeast and Southeast as well as the eastern part of the Central United States. - The Delaware Valley is the valley through which the Delaware River flows. By extension, this toponym is commonly used to refer to the Philadelphia metropolitan area ("the [Lower] Delaware Valley Metropolitan Area"), which straddles the Lower Delaware River just north of its estuary. - Pennsylvania (Pennsylvania German: "Pennsylvaani"), officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States. The Appalachian Mountains run through its middle. The commonwealth borders Delaware to the southeast, Maryland to the south, West Virginia to the southwest, Ohio to the west, Lake Erie and the Canadian province of Ontario to the northwest, New York to the north, and New Jersey to the east. - The Centennial International Exhibition of 1876, the first official World's Fair in the United States, was held in Philadelphia, Pennsylvania, from May 10 to November 10, 1876, to celebrate the 100th anniversary of the signing of the Declaration of Independence in Philadelphia. Officially named the International Exhibition of Arts, Manufactures and Products of the Soil and Mine, it was held in Fairmount Park along the Schuylkill River on fairgrounds designed by Herman J. Schwarzmann. Nearly 10 million visitors attended the exhibition and thirty-seven countries participated in it. - Fairmount Park is the largest municipal park in Philadelphia, Pennsylvania and the historic name for a group of parks located throughout the city. Fairmount Park consists of two park sections named East Park and West Park, divided by the Schuylkill River, with the two sections together totalling . Management of Fairmount Park and the entire citywide park system is overseen by Philadelphia Parks & Recreation, a city department created in 2010 from the merger of the Fairmount Park Commission and the Department of Recreation. - Lemon Hill ( 1800 -- 01 ) is a Federal - style mansion in Fairmount Park , Philadelphia , built by the merchant Henry Pratt . Originally part of Robert Morris 's 300 - acre ( 120 ha ) estate , The Hills , Pratt purchased 43 acres ( 17 ha ) at a sheriff 's sale for $ 14,654 in 1799 . According to Pratt 's letterbooks , recently discovered by Philadelphia Museum of Art assistant curator Martha C. Halpern , he designed the mansion himself and served as his own general contractor . Named for the many lemon trees in Morris 's greenhouse , which was part of his new property , Pratt lived here until his death in 1838 . To protect its water supply , the City of Philadelphia began purchasing properties along the Schuylkill River , beginning with Lemon Hill in 1844 . This formed the basis for what is now Fairmount Park . Lemon Hill is located on a bluff overlooking the Schuylkill River and Boathouse Row . Exceptional architectural features include its three oval parlors , stacked one on top of the other , with curved fireplace mantles and doors . The mansion was restored by the architectural historian Fiske Kimball , 1925 -- 26 , who lived here while president of the Philadelphia Museum of Art , 1925 -- 55 . He conjectured that Robert Morris had built the mansion , but this was disproven by Martha C. Halpern in 2005 . In the William L. Clements Library at the University of Michigan , Ann Arbor , she discovered Henry Pratt 's letterbooks , and established through tax records that the mansion did not exist at the time he purchased the land . Owned by the City of Philadelphia , it is operated as a house museum by the Colonial Dames of America and the Friends of Lemon Hill . Long hidden by dense trees on the sides of the hill , a restoration of the '' historic viewscape '' is underway which will recreate the original vistas of and from the mansion . What object entity has the relation of 'instance of' with the subject 'lemon hill'? Choices: - anniversary - building - census - circle - city - collection - combined statistical area - country - declaration of independence - exhibition - fair - geographical - group - hall - hill - lake - mass - may - mine - museum - name - nation - ocean - official - park - parkway - pattern - province - recreation - region - river - sculpture - seven - soil - state - statistics - treaty - tributary - valley - virginia - year
The answer to this question is:
building