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Photo: Antony-22, CC BY-SA 4.0 via Wikimedia Commons
Located in the mansion of Congressman and magazine editor Lloyd Stephens Bryce.
The Nassau County Museum of Art (NCMA) is located on the former Frick "Clayton" Estate, a 145-acre (59 ha) property in Roslyn Harbor on the Gold Coast of Long Island, New York. The main museum building, the Arnold and Joan Saltzman Fine Arts Building, is a three-story neo-Georgian mansion designed by Ogden Codman Jr. around 1900 and later remodeled by Sir Charles Carrick Allom. In addition to the mansion, NCMA, which receives nearly 200,000 visitors each year, includes The Manes Family Art & Education Center, opened in 2017, as well as a Sculpture Park, a Formal Garden, rare specimen trees and marked walking trails.
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Estate and home of poet and journalist William Cullen Bryant, located right on Hempstead Harbor. Now a county park. There are some additional historic Victorian houses along Bryant Avenue immediately north of the park, though these are private residences.
A 12-acre botanic garden on the former estate of attorney Grenville Clark. Has 5,000 species of plants, with over 1,000 labeled trees, shrubs, and garden plants.
Former 1906 home and estate of steel magnate John Shaffer Phipps
Contains hiking trails and three historic mansions: Castle Gould, Hempstead House, and Falaise
One of the five U.S. military academies. The grounds and a museum are open to the public during the day, and tours can be arranged if reserved in advance