Upper Brookville, New York

The Elmcroft Estate, also called the Norwich House, is a historic mansion in Upper Brookville, New York, U.S. The 38-room property was built in 1918 by industrialist Frank C B Page, president of E W Bliss Machine Works in Brooklyn NY. From 1938 to 1952 it was the residence of Nathan L. Miller, who served as the governor of New York from 1921 to 1922. In 1952, it was purchased by the Soviet Union as a retreat for their diplomats. Russian access to the site was commuted in the wake of the alleged Russian interference in the 2016 United States elections as part of a number of sanctions taken by the United States government against Russian diplomatic personnel.

Planting Fields Arboretum State Historic Park, which includes the Coe Hall Historic House Museum, is an arboretum and state park covering over 400 acres (160 ha) located in the village of Upper Brookville in the town of Oyster Bay, New York. Near the end of America's Gilded Age, the estate named Planting Fields was the home of William Robertson Coe, an insurance and railroad executive, and his wife Mary "Mai" Huttleston (née Rogers) Coe, the youngest daughter of millionaire industrialist Henry H. Rogers, who had been a principal of Standard Oil. It includes the 67-room Coe Hall, greenhouses, gardens, woodland paths, and outstanding plant collections. Its grounds were designed by Guy Lowell, A. R. Sargent, the Olmsted Brothers, and others. Planting Fields also features an herbarium of over 10,000 pressed specimens. The name "Planting Fields" comes from the Matinecock Indians who cultivated the rich soil in the clearings high above Long Island Sound.

The Brookville Reformed Church, located in Brookville, New York, is one of the oldest existing church congregations in the United States. The church was founded by 17th century Dutch settlers. During September 2006 in the midst of celebrating the church's anniversary, its safe was opened to reveal records from 1732 indicating how the Dutch settled the area and formed the church. Further documents revealed that the Dutch language was spoken and written up to the Civil War years.In the 1969 film The Out-of-Towners starring Jack Lemmon, a short clip of the church is featured during the opening credits. Dick Van Dyke was also a former member and taught Sunday School. The Rev. J. Stanley Addis was one of its longest serving Pastors, from 1931 to his retirement in 1966. Rev. Addis was a graduate of the Wharton School and New Brunswick Theological Seminary.

Piping Rock Club is a country club in Matinecock, New York. It falls within the ZIP Code boundaries of Locust Valley, New York.

The John P. Humes Japanese Stroll Garden is a 7-acre (28,000 m2) Japanese garden in Mill Neck, New York, providing a retreat for passive recreation and contemplation.

Benjamin Moore Estate, also known as Chelsea, is a historic estate located at Muttontown in Nassau County, New York. It was designed in 1923–1924 by architect William Adams Delano (1874–1960) for Benjamin Moore and Alexandra Emery. The manor house is an eclectic Chinese and French Renaissance style inspired dwelling. It is "U" shaped, two and one half stories high with hipped and gable roofs, covered with concrete block on a concrete foundation. The front facade features a steeply pitched roof, four large irregularly spaced chimneys, and a large brick tourelle with a conical roof. The property also has a contributing formal garden, gatehouse, picturesque roadways, garage, conservatory, octagonal gazebo, shed and tool house, and large open lawns.It was listed on the National Register of Historic Places in 1979.

Portledge School is an independent college-preparatory day school located in Matinecock, New York with over 500 students in nursery through 12th grade (2023–2024 school year).

Matinecock is a village located within the Town of Oyster Bay in Nassau County, on Long Island, in New York, United States. The population was 810 at the 2010 census.

Brookville is a village located within the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States. The population was 3,465 at the time of the 2010 census.

Lillian Sefton Dodge Estate, also known as Sefton Manor and Mill Neck Manor Lutheran School for the Deaf, is a historic estate located at Mill Neck in Nassau County, New York. It has 34 rooms and is 60,000 square feet.

Harmony Heights Residential and Day School is a therapeutic school for girls diagnosed with emotional issues in East Norwich, New York, United States. Harmony Heights is a New York Department of Education-approved program and offers a New York State Regents diploma program in a therapeutic special educational setting. Founded in 1974, Harmony has assisted thousands of girls throughout the New York Metropolitan area (including Long Island, Brooklyn, Queens, Manhattan, the Bronx, Staten Island, Westchester County, and Upstate New York) in getting the help they need to heal and recover from serious emotional problems (such as severe anxiety, depression, trauma, and PTSD) that have interfered with or prevented them from benefiting from or attending traditional public schools. Harmony provides therapeutic and educational support systems, which include small class sizes; one-on-one, group, and family counseling; parent supports; Equine and Garden therapies, and Therapy Dogs. Harmony has rolling admission and students may transfer in at any time of year.The school was formerly the Mabel G. Fox School.Harmony Heights School has 75 students, ages 13 to 21, diagnosed with emotional difficulties.Tuition is regularly paid for by the school district where the student lives.Harmony Heights School has a residential program. Students enroll in either the day program or the residential program.

Mill Neck is a former rail station along the Oyster Bay Branch of the Long Island Rail Road. It is located between Oyster Bay and Locust Valley stations. As of 2023, the historic former station depot is home to Mill Neck's village hall, post office, and police substation.