New Croton Aqueduct

Kykuit ( KY-kət), known also as the John D. Rockefeller Estate, is a 40-room historic house museum in Pocantico Hills, a hamlet in the town of Mount Pleasant, New York 25 miles north of New York City. The house was built for oil tycoon and Rockefeller family patriarch John D. Rockefeller. Conceived largely by his son, John D. Rockefeller Jr., and enriched by the art collection of the third-generation scion, Governor of New York, and Vice President of the United States, Nelson Rockefeller, it was home to four generations of the family. The house is a National Historic Landmark owned by the National Trust for Historic Preservation, and tours are given by Historic Hudson Valley. Kykuit (in modern Dutch the word Kijkuit means "Lookout", from kijkuit (also uitkijk), both compound nouns meaning "lookout, look-out") is situated on the highest point in Pocantico Hills, overlooking the Hudson River at Tappan Zee. Located near Tarrytown and Sleepy Hollow, it has a view of the New York City skyline 25 miles to the south.

The Tarrytown Reservoir is an 81 acres (0.33 km2) storage reservoir in Tarrytown, New York. It was completed in 1897 by the Village of Tarrytown as the village's main storage reservoir. The reservoir was formed by the Tarrytown Waterworks Dam which impounded a tributary of the Saw Mill River. The reservoir itself has a maximum capacity of 1,100 acre-feet (1,400,000 m3).The Tarrytown Waterworks Dam is earthen, 18 foot (5.5 m) high, 315 foot (96 m) long and sits at the head of a 1.4 square miles (3.6 km2) drainage area.The reservoir was decommissioned in 1993.

Pocantico Hills is a hamlet in the Westchester County town of Mount Pleasant, New York, United States.The Rockefeller family estate, anchored by Kykuit, the family seat built by John D. Rockefeller Sr., is located in Pocantico Hills, as is the adjacent Rockefeller State Park Preserve.

Union Church of Pocantico Hills is a historic church in Pocantico Hills, New York. The church was built by John D. Rockefeller Jr. in 1921, as part of his plans to develop the town of Pocantico Hills, which was below his estate Kykuit. Upon the death of Rockefeller's wife Abby Aldrich Rockefeller in 1948, their son Nelson Rockefeller had Henri Matisse design the church's rose window in honor of her memory shortly before the artist's own death in 1954. When John D. Rockefeller Jr. died in 1960, his children had artist Marc Chagall design a Good Samaritan window in his honor. It is a one-story neo-Gothic style building with fieldstone foundation and walls and a slate covered, highly pitched gable roof. In 1930–1931, a parish hall was added to the east end of the church.On May 6, 2006, the church was listed in the National Register of Historic Places.

Marymount College, Tarrytown (also known as Marymount College of Fordham University) was a women's college in the United States which eventually became part of Fordham University. The Marymount campus was located in Tarrytown, New York. The last class graduated in 2007, and the campus was sold in 2008.

The Edward Harden Mansion, also known as Broad Oaks, is a historic home located on North Broadway (U.S. Route 9) in Sleepy Hollow, New York, United States, on the boundary between it and neighboring Tarrytown. It is a brick building in the Georgian Revival style designed by Hunt & Hunt in the early 20th century, one of the few mansions left of many that lined Broadway in the era it was built. Also on the property is a wood frame carriage house that predates it slightly. Both buildings were listed on the National Register of Historic Places in 2003.Edward Harden had earned fame and fortune as the Chicago Tribune reporter who broke the story of Admiral George Dewey's victory in the Battle of Manila Bay. He later left journalism for finance, and after earning a seat on the New York Stock Exchange commissioned the house. Shortly after it was built, he allowed part of the home to be used for a new kindergarten that was the first Montessori school in the U.S. The Harden family later moved to nearby Scarborough. It was used as a home for retired seamstresses and, in the middle of the century, sold to the local school district, which continues to use it as its main offices today.

Sleepy Hollow High School (SHHS) is a high school located in Sleepy Hollow, Westchester County, New York. It is part of the Union Free School District of Tarrytowns. The mascot is the Headless Horseman.

Eastview (or East View) is a business district and former hamlet in Mount Pleasant, Westchester County, New York, United states, located approximately 25 miles north of Midtown Manhattan. It was primarily residential, and had a post office, railroad station, and school. In the late 1920s, John D. Rockefeller, Jr. purchased most of the hamlet's property and razed the buildings. The Hammond House, a National Register of Historic Places-listed farmhouse dating to the 1720s, is located in the district, on New York State Route 100C. Currently, dozens of commercial buildings have been developed in the area. The community is now most prominently known as the global headquarters for Regeneron Pharmaceuticals, which moved into a newly constructed campus in 2014.

Patriot's Park (originally referred to as Brookside Park) is located on U.S. Route 9 along the boundary between Tarrytown and Sleepy Hollow in Westchester County, New York, United States. It is a four-acre (1.6-ha) parcel with a walkway and several monuments. In 1982 it was added to the National Register of Historic Places.

The Old Dutch Church of Sleepy Hollow (Dutch: Oude Nederlandse Kerk van Sleepy Hollow), listed on the National Register of Historic Places as Dutch Reformed Church (Sleepy Hollow), is a 17th-century stone church located on Albany Post Road (U.S. Route 9) in Sleepy Hollow, New York, United States. It and its three-acre (1.2 ha) churchyard feature prominently in Washington Irving's 1820 short story "The Legend of Sleepy Hollow". The churchyard is often confused with the contiguous but separate Sleepy Hollow Cemetery. It is the second oldest extant church and the 15th oldest extant building in the state of New York, renovated after an 1837 fire. Some of those renovations were reversed 60 years later, and further work was done in 1960. It was listed on the Register in 1966, among the earliest properties so recognized. It had already been designated a National Historic Landmark in 1961. It is still the property of the Reformed Church of the Tarrytowns, which holds summer services there, as well as on special occasions such as Christmas Eve.

The Reformed Church of the Tarrytowns in Tarrytown, New York, serves both Tarrytown and Sleepy Hollow, New York. It was constructed in 1837 as an extension of the Old Dutch Church of Sleepy Hollow to serve the Tarrytown community. The new community of Dutch Reformed would have had its own Elders and Deacons and shared a minister with the Old Dutch Church of Sleepy Hollow. That church has a similar arrangement with the Dutch Reformed at Cortlandt Manor dating from 1697 when the Sleepy Hollow community was first recorded as established, though the structure had been completed in 1685 and the community had been there for long before. The Cortlandt Manor community had its own Elders and Deacons but recognized the community at Sleepy Hollow as its head, and regularly went down to the village for services and to record their births and marriages. The community at Tarrytown became independent from Sleepy Hollow in the 1850s and soon after dropped the “Dutch” association from its name. As the Sleepy Hollow community diminished and the Old Dutch Church of Sleepy Hollow became less used, the Tarrytown community adopted the name for their landmark church the Reformed Church of the Tarrytowns, adding that it was a “continuation of the Old Dutch Church of Sleepy Hollow.” Presenting an impressive façade on North Broadway, the structure's steeple remains the highest point on North Broadway and the tallest physical structure in Tarrytown, despite not being built on the heights of the city. The church's porch of four columns supporting an extended pediment offers a refined architectural addition to the business district of historic Tarrytown.

Sleepy Hollow Cemetery in Sleepy Hollow, New York, is the final resting place of numerous famous figures, including Washington Irving, whose 1820 short story "The Legend of Sleepy Hollow" is set in the adjacent burying ground at the Old Dutch Church of Sleepy Hollow. Incorporated in 1849 as Tarrytown Cemetery, the site posthumously honored Irving's request that it change its name to Sleepy Hollow Cemetery. It was listed on the National Register of Historic Places in 2009.