New York Harbor that contains a museum and former

Recreation hall
The recreation hall and one of the island's two recreation shelters are located between islands 2 and 3 on the western side of Ellis Island, at the head of the former ferry basin between the two landmasses.^[17][18] Built in 1937 in the Colonial Revival style, the structures replaced an earlier recreation building at the northeast corner of island 2.^{[268][269][270]}
The recreation hall is a two-story building with a limestone base, a facade of brick in Flemish bond, a gable roof, and terracotta ornamentation. The first floor contained recreational facilities, while the second floor was used mostly for offices. It contains wings on the north, south, and west. The recreation shelter, a one-story brick pavilion, is located directly to the east.^[270][271] A second shelter of similar design was located adjacent to the power plant on the island's north side.^[269][271]
Island 3

Isolation ward on island 3
The contagious disease hospital comprised 17 pavilions, connected with a central connecting corridor. Each pavilion contained separate hospital functions that could be sealed off from each other.^[17][18] Most of the structures were completed in 1911.^{[142][138][272]} The pavilions included eight measles wards, three isolation wards, a power house/sterilizer/autopsy theater, mortuary, laboratory, administration building, kitchen, and staff house. All structures were designed by James Knox Taylor in the Italian Renaissance style and are distinguished by red-tiled hip roofs, roughcast walls of stucco, and ornamentation of brick and limestone.^[272]
The office building and laboratory is a 2.5-story structure located at the west end of island 3.^[273] It housed doctors' offices and a dispensary on the first floor, along with a laboratory and pharmacists' quarters on the second floor.^[273][274] In 1924, the first floor offices were converted into male nurses' quarters.^[275] A one-story morgue is located east of the office building, and was converted to the "Animal House" circa 1919.^[276][277]
An "L"-shaped powerhouse and laundry building, built in 1908, is also located on the west side of island 3. It has a square north wing with boiler, coal, and pump rooms, as well as a rectangular south wing with laundry and disinfection rooms, staff kitchen, and staff pantry.^[274][278] The powerhouse and laundry also had a distinctive yellow-brick smokestack. Part of the building was converted into a morgue and autopsy room in the 1930s.^[278][279]
To the east are the eight measles pavilions (also known as wards A-H), built in phases from 1906 to 1909 and located near the center of island 3. There are four pavilions each to the west and east of island 3's administration building. All of the pavilions are identical, two-story rectangular structures.^{[274][280][281]} Each pavilion floor had a spacious open ward with large windows on three sides and independent ventilation ducts. A hall leading to the connecting corridor was flanked by bathrooms, nurses' duty room, offices, and a serving kitchen.^[281]
The administration building is a 3.5-story structure located on the north side of island 3's connecting corridor, in the center of the landmass.^[282] It included reception rooms, offices, and a staff kitchen on the first floor; nurses' quarters and operating rooms on the second floor; and additional staff quarters on the third floor.^[283] A one-story kitchen with a smokestack is located opposite the administration building to the south.^[284][285]
The eastern end of island 3 contained three isolation pavilions (wards I-K) and a staff building.^[274] The isolation pavilions were intended for patients for more serious diseases, including scarlet fever, diphtheria, and a combination of either of these diseases with measles and whooping cough. Each pavilion is a 1.5-story rectangular structure. Wards I and K are located to the south of the connecting corridor while ward J is located to the north; originally, all three pavilions were freestanding structures, but covered ways were built between wards I and K and the center corridor in 1914. There were also nurses' quarters in each attic.^{[274][286][287]} The staff building. located at the extreme east end of island 3's connecting corridor, is a 2.5-story building for high-ranking hospital staff. Living and dining rooms, a kitchen, and a library were located on the first floor while bedrooms were located on the second floor.^[274][288]