Muttontown Preserve

The Knollwood estate was a Gold Coast era castle-esque house and estate. Located in Muttontown, New York, U.S., its ruins are now part of the Muttontown Preserve.

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.

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.

Nassau Hall is a historic mansion on the grounds of the Muttontown Preserve in Muttontown, New York. It was built in 1904 for Bronson Winthrop and was known as Muttontown Meadows. It was the first commission of Delano and Aldrich in the area. Its exterior walls were modeled after Mount Vernon, and was on an estate of 183 acres.It was purchased by Lansdell Christie in 1950, who sold it to Nassau County in 1969, becoming the headquarters of the Nassau Parks Conservancy. It was restored in 2010. It is one of three mansions in the Muttontown Preserve, along with the Benjamin Moore Estate, also known as Chelsea, and the destroyed Knollwood Estate.

Muttontown is a village located within the Town of Oyster Bay in Nassau County, on Long Island, in New York, United States. The population was 3,497 at the 2010 census. it is part of the Greater Oyster Bay area anchored by Oyster Bay.

East Norwich (formerly known as Norwich) is a hamlet and census-designated place (CDP) 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 2,792 at the time of the 2020 census.

The Diocese of Northeast America is an ecclesiastical territory or diocese of the Malankara Orthodox Syrian Church. The diocese has jurisdiction over eastern parts of the United States and eastern parts of Canada. The diocese is headquartered at Muttontown, New York.

Long Island Lutheran Middle and High School (commonly known as LuHi) is a Christian college preparatory school in Brookville, New York, United States. It was founded and built in 1960 on a 32-acre (13 ha) estate and has a student body of approximately 420 students in grades 6-12, with students coming from more than 50 school districts throughout Long Island and New York City. The school is accredited by the New York State Association of Independent Schools.

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.

The New York College of Health Professions is a private college focused on healthcare with its main campus in Muttontown, New York.

Islanders Iceworks is a multipurpose ice hockey facility in Syosset, New York, containing two regulation-sized NHL rinks. It is owned and operated by the New York Islanders, an NHL team, and is used primarily as a practice facility. Additionally the arena is available to the local community for a variety of reasons, including 'learning to skate', house leagues and summer camps.After founding both a men's and women's ice hockey team, Long Island University reached an agreement with the New York Islanders to use the Iceworks as their primary home rink.The Islander's former owner Charles Wang purchased the Iceworks out of bankruptcy in 2015 for $8 million.

Upper 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 1,698 at the 2010 census.