The Shell House

Killenworth is a historic mansion in Glen Cove, New York constructed for George Dupont Pratt in 1912. It was purchased by the Soviet Union in 1946 to become the country retreat of the Soviet, and later Russian, delegation to the United Nations. In the 1980s the property was subject to allegations it was being used for espionage. There has been a long-standing conflict with the City of Glen Cove over its tax status.

Welwyn Preserve County Park is a 204-acre (0.83 km2) public nature reserve in Glen Cove, on the North Shore of Long Island in the U.S. state of New York. Welwyn Preserve was originally Welwyn Estate, the estate of the industrialist Harold I. Pratt. The main house, Welwyn, was one of the Gold Coast Mansions. The Welwyn estate also includes woodland and other natural habitats, as well as part of the coast facing north onto Long Island Sound. The mansion is currently used as the Holocaust Memorial and Tolerance Center of Nassau County.

Glen Cove's Gurdwara Mata Sahib Kaur is a Sikh Gurdwara or temple in Glen Cove, New York in Nassau County on Long Island. It has an area of 15 acres near Long Island Sound. The main building is 30,000 sq ft (2,800 m2) built-up area, 20 rooms and three halls. There is a secondary building with a five-bedroom house as the residence of sewadars. The property was purchased for $1.20 million to make a gurdwara. This gurdwara was founded by the Sikhs of Long Island, New York when they felt that they needed a larger facility. It separated from Gurdwara Guru Gobind Singh Sikh Center Plainview. The first head priest was Singh Sahib Gyani Jagtar Singh Jachak. Bhai Sahib left to serve again as an international Kathakaar. Presently the granthi is Bhai Paramjit Singh. Sewadars of Gurdwara Sahib are Bhai Swinder Singh and Bhai Navdeep Singh. The president of Gurdwara Sahib is Sardar Harbinder Singh Sachdev and secretary is Sardar Mohan Singh Kabuli. Gurdwara Sahib have Ragi Jathas by each month and Gurbani Vichar is done by Sikh preachers. Gurdwara Sahib attracts an average weekly congregation of 200 families from the surrounding area. It has weekly services and celebrates Gurpurabs: Informal Diwan on Fridays from 7 to 8:30pm Formal weekly services on Sundays from 10 am with Sukhmani Sahib 11-12:15 Asa Di Var 12:15-12:45 Gurbani Katha 12:45-1 Kids Program 1-1:30 Shabad Kirtan Finished with Guru Ka Langar.Associations/organizations associated with Gurdwara Sahib are East Punjab Sikh Society, Itshi Ladies Satsang, Sikh Missionary College, International Sikh Women's Council, American Sikh Prabhandak Committee, World Sikh Council, Akhand Keertani Jatha, The Sikh Coalition, Long Island Keertan Project.

The Holocaust Memorial and Tolerance Center of Nassau County (HMTC) is a Holocaust memorial, a museum and a tolerance center in Glen Cove, on the North Shore of Long Island in the U.S. State of New York. The museum and tolerance center is situated within the original Gold Coast Mansion "Welwyn", in what is now Welwyn Preserve County Park. The memorial also includes the adjoining garden, which was originally designed by the Olmsted Brothers, the influential American landscape architectural firm. As of 2014, the museum is open on Mondays to Fridays from 10:00 am to 4:30 pm, and on Saturdays and Sundays from 12:00 pm to 4:00 pm.

Poplar Hill is a historic mansion in Glen Cove, New York. Constructed for Frederic B. Pratt in 1925, it has been in use as a healthcare center since 1947, and is currently known as the Glengariff Healthcare Center.

Webb Institute is a private college focused on engineering and located in Glen Cove, New York. Each graduate of Webb Institute earns a Bachelor of Science degree in naval architecture and marine engineering. Successful candidates for admission receive full tuition for four years. Webb Institute is noted in the marine industry for its unique emphasis on ship design, systems engineering, and practical work experience.

John E. Aldred Estate, also known as St. Josaphat's Monastery, is a historic estate located at Lattingtown in Nassau County, New York. It was designed in 1916 by architect Bertram Goodhue, with landscaping by Olmsted Brothers, for public utility executive John Edward Aldred. The estate consists of the main residence, known as Ormston; the superintendent's quarters; hen house; 2+1⁄2-story, hip-roofed stable; greenhouse and conservatory; garage; utility shed; garden shed; gazebo; and two gatehouses. The main house is a Tudor Revival–style dwelling built of random-coursed, quarry-faced limestone and roofed in heavy slate. The Basilian Order of Saint Josaphat purchased the property in 1944. It was listed on the National Register of Historic Places in 1979.

Glen Cove High School, commonly referred to as GC, or GCHS, is the only public high school in the Glen Cove City School District. Located at 150 Dosoris Ln., Glen Cove, on the North Shore of Long Island, GCHS sits upon 50 acres (200,000 m2) of land. The current building has been in use since 1962, and prior to that year Robert M. Finley Middle School, the district's current middle school, was used as the high school. As of the 2018–19 school year, the school had an enrollment of 1,033 students and 67.3 classroom teachers (on an FTE basis), for a student–teacher ratio of 15.3:1. There were 554 students (53.6% of enrollment) eligible for free lunch and 75 (7.3% of students) eligible for reduced-cost lunch.

North Country Reform Temple-Ner Tamid is a Reform Jewish synagogue located at 86 Crescent Beach Road, in Glen Cove, Nassau County, New York, in the United States. Founded in 1956, the temple has employed two facilities in Glen Cove, the first burning down in 1982. Following that, the congregation was sheltered by the local Congregation Tifereth Israel and St. Paul's Episcopal Church for three years until the dedication of the current synagogue in 1985. Rabbi Michael S. Churgel is the rabbi, as of December 2023.

Woolworth Estate is a historic estate located at Glen Cove in Nassau County, New York. It was designed in 1916 by architect C. P. H. Gilbert (1861–1952) for Frank Winfield Woolworth (1852–1919). The estate consists of the main residence, known as Winfield Hall; a large garage with remodeled living quarters; a main entrance arch; two greenhouses; and various landscape features including a tea house.

Glen Cove Hospital is a hospital in Glen Cove, New York, United States, that is part of the Northwell Health system. It was founded in 1921 and moved to its current location in 1927. From 1927 to 1955, it was known as North Country Community Hospital, and at other times it had various names referencing Glen Cove.

Glen Cove is a city in Nassau County, New York, United States, on the North Shore of Long Island. At the 2020 United States Census, the city population was 28,365 as of the 2020 census. The city was considered part of the early 20th century Gold Coast of the Long Island, as the areas along the waterfront were developed as large country estates by wealthy entrepreneurs and businessmen such as J.P. Morgan, Phipps, Pratt, and Prybil. Glen Cove also had manufacturing and a diverse population that worked in industry, local agriculture and retail businesses. Of Nassau County's five municipalities, Glen Cove is one of the two municipalities that is a city, rather than a town – the other being Long Beach on the South Shore. The city was the location of several successful manufacturing facilities in the 20th century. It attracted numerous immigrants from Ireland, Italy, and eastern Europe. More recently, it has been settled by immigrants of later migrations, from Central and South America, and Asia.