Mary Flagler Cary Arboretum

Lynfeld is a farm located on South Road in the Town of Washington, New York, United States, near the village of Millbrook. Its farmhouse, a frame structure dating to the late 19th century, is in an unusual shape for a building in the Italianate architectural style. The land was first part of a much larger farm established sometime in the late 18th century. In the 1870s, the original owner's grandson built the main house. His son was an innovative farmer who was among the first in the Hudson Valley and Dutchess County, and in one case the country, to raise several new species of livestock. It remained in the original family's hands until the late 1960s. In 1987 the farm was listed on the National Register of Historic Places.

The Bloomvale Historic District is located east of the hamlet of Salt Point, New York, United States. It is a collection of buildings and structures around the intersection of Clinton Corners Road (Dutchess County Route 13), state highway NY 82 and the East Branch of Wappinger Creek. Most of it is in the Town of Pleasant Valley; the eastern portion is in the Town of Washington. The village (and thus the district) was named after Isaac Bloom, a landowner and politician in the area during and after the Revolutionary War who built a Federal style mansion and operated the first mill on the creek (and thus sometimes historically known as Bloom's Mill or Bloomdale). By the mid-19th century it had grown into a small industrial town around what was now a cotton mill. After a fire destroyed the mill, the community faded away in the early 20th century. A later owner was able to use the remaining facilities as a cider mill until almost the middle of the century. In 1991 the dam, the remaining mill buildings, and some of the houses were grouped into a historic district and listed on the National Register of Historic Places.

Innisfree Garden is an American nonprofit public garden influenced by Chinese style in Millbrook, New York. The garden was established between 1930 and 1960 as the private garden of Walter and Marion Beck, inspired by scroll paintings of the 8th-century Chinese poet and painter Wang Wei. With the help of landscape architect Lester Collins from Harvard University, individual garden scenes inspired by the Chinese paintings were connected to an overall landscape around a glacial lake, in keeping with the ecological surroundings. From 1960, the garden was managed by a foundation headed by Collins, and open to the public. It was listed on the National Register of Historic Places in Dutchess County in 2019.

Bennett College was a women's college founded in 1890 and located in the village of Millbrook, New York. The school closed in 1977.

The St. Joseph - Immaculate Conception Catholic Church is a Roman Catholic parish church under the authority of the Roman Catholic Archdiocese of New York, located in Millbrook, Dutchess County, New York.

Wolfson Trailer House is a 1949 house designed by the pioneering modernist Marcel Breuer in Salt Point, New York, United States, and commissioned by Breuer's friend, the artist Sydney Wolfson. It is among the most distinctive of Breuer's residential designs, as Wolfson requested that Breuer integrate his 37-foot 1948 Spartan Royal Mansion trailer as one wing of the house, which Breuer initially resisted before agreeing to. The house features many Breuer hallmarks: cantilevered living space, central fireplace made of native stone, and natural wood finishes. The house sits on 20 acres of land abutting Wappinger Creek in Dutchess County north of New York City. In 1950, a separate artist's studio was added to the property. Plans are underway by the current owners to add a third structure to the property, designed in dialogue with the original Breuer structure.

The Thorne Memorial School building is located at Franklin and Maple streets in Millbrook, New York, United States. It is a brick structure built at the end of the 19th century, considered the most distinctive public building in the village. After being challenged by a newspaper reporter's column about the new village's lack of a school, a wealthy local resident had the school built at his expense and donated it to the community. In order for it to be accepted, it was necessary for the village to formally incorporate. It served as its high school until 1962. Today it is used for special purposes and afterschool activities. In 1996 it was listed on the National Register of Historic Places along with an adjacent blacksmith's shop.

Millbrook is a village in Dutchess County, New York, United States. Millbrook is located in the Hudson Valley, on the east side of the Hudson River, 90 miles (140 km) north of New York City. Millbrook is near the center of the town of Washington, of which it is a part. In the 2020 census, Millbrook's population was 1,455. Millbrook is part of the Kiryas Joel–Poughkeepsie–Newburgh, NY Metropolitan Statistical Area as well as the larger New York–Newark–Bridgeport Combined Statistical Area.

Millbrook High School is a part of the Millbrook Central School System (grades 9-12). It is located in Millbrook, Dutchess County, New York. The address of the school is 70 Church Street, Millbrook, NY. Built between 2005 and 2006, and opening in September 2006, it is the newest school in the Millbrook Central School District.

The Nine Partners Meeting House and Cemetery is located at the junction of NY state highway 343 and Church Street, in the village of Millbrook, New York, United States. The meeting house, the third one on the site, was built by a group of Friends ("Quakers") from the Cape Cod region, Nantucket and Rhode Island in 1780. It was the largest meeting in the Hudson Valley, and many other meetings split off from it. Unusually, it was located near a developed area, and the Friends in it were more prosperous than their co-religionists elsewhere in the region. Its size and use of brick, along with several other architectural features, are unusual for meeting houses. Attendance at meetings dwindled over the course of the 19th century, and in 1897 control of the property was turned over to the Nine Partners Burial Ground Association. It is still used for occasional Quaker events, and is well preserved from the days of its regular use. In 1989 it was listed on the National Register of Historic Places as part of a Multiple Property Submission of Quaker meeting houses in Dutchess County.

The Hitchcock Estate is a historic mansion and surrounding grounds in Millbrook, New York, associated with Timothy Leary and the psychedelic movement. It is often referred to in this context as just Millbrook; it is also sometimes called by its original name, Daheim. The 2,300-acre (9.3 km2) (or 2,500-acre (10 km2)) estate was purchased in stages by assembling five farms, beginning in 1889, by German-born acetylene gas mogul Charles F. Dieterich (1836–1927), a founder of Union Carbide. In 1912 Addison Mizner designed the four-story 38-room mansion which Dieterich named "Daheim" ("At home"). Featuring turrets, verandas, and gardens, the late-Victorian mansion has been described architecturally as Queen Anne style or Bavarian Baroque. The estate also featured a large gatehouse, horse stables, and other outbuildings. Ownership of the estate passed from Dieterich's heirs to oilman Walter C. Teagle and then to the Hitchcock family. Siblings William Mellon "Billy" Hitchcock, Tommy Hitchcock III, and Margaret Mellon "Peggy" Hitchcock, heirs to the Mellon fortune (children of Tommy Hitchcock Jr., grandchildren of oilman William Larimer Mellon Sr., and great-great-grandchildren of Mellon fortune founder Thomas Mellon), who were familiar with Timothy Leary's work and Leary personally, gave the estate over for use by Leary in 1963. Peggy Hitchcock was director of Timothy Leary and Richard Alpert's International Federation for Internal Freedom (IFIF)'s New York branch, and her brother Billy rented the estate to IFIF (later re-named the Castalia Foundation). Leary and the group he gathered around him lived at the estate and performed research into psychedelics there. The Castalia Foundation also hosted weekend retreats on the estate where people paid to undergo the psychedelic experience without drugs, through meditation, yoga, and group therapy sessions. Leary, Alpert, and Ralph Metzner wrote the 1964 book The Psychedelic Experience at the mansion. People who lived at the estate included Richard Alpert, Arthur Kleps, and Maynard Ferguson, while the numerous visitors and guests included R. D. Laing, Alan Watts, Allen Ginsberg, Charles Mingus, Helen Merrill, Jonas Mekas, and Ivy League academics. Ken Kesey and the Merry Pranksters visited in their bus Furthur but were unable to meet with Leary. Nina Graboi described Millbrook as "a cross between a country club, a madhouse, a research institute, a monastery, and a Fellini movie set. When you entered you were greeted by a sign that asked you to 'kindly check your esteemed ego at the door.'" During Leary's residence at the mansion (1963–1968) the culture and ambiance there evolved from scholarly research into psychedelics to a more party-oriented atmosphere, exacerbated by an increasing stream of visitors, some youthful and of the hippie persuasion. The mansion was the target of drug raids. Leary and his group were evicted in 1968, and Leary moved to California. The mansion was later boarded up and fell into disrepair, including structural degradation. But after about two decades of effort it is (as of 2016) habitable although not modernized. It is still owned by the Hitchcock family. In 2003, Hudsonia Institute scientists discovered on the estate a circumneutral bog lake (a spring fed calcareous body of water that usually supports the vegetation of both acidic bogs and calcareous marshes), rare in the area and worthy of preservation. In April 2024, Peggy Hitchcock, who was considered to be the family's scion, died. In the time following her death, Peggy was also acknowledged to have been the one who persuaded her brothers to let Leary rent a room at the mansion. It was reported that her brother Tommy, and also a half brother Alexander McLaughlin, died in 2023. As of 2024, the estate remained for sale at an asking price of $65 million.

Creek Meeting House and Friends' Cemetery is a historic Society of Friends meeting house and cemetery on Salt Point Turnpike/Main Street in Clinton Corners, Dutchess County, New York, United States. It was built between 1777 and 1782. The meeting house is a two-story, squarish building constructed of fieldstone. Land for the building was given by Able Peters, whose substantial brick house is the next building on the same side of the road north of the meeting house. In 1828 the Friends Creek Meeting split into Hicksite and Orthodox meetings. The Orthodox meeting moved about a mile north of Clinton Corners to the Shingle Meeting House located on the grounds of the current Friends Upton Lake Cemetery. The Creek Meeting sold the building to the Upton Lake Grange in 1927 and joined the Bulls Head Meeting in 1936.The Grange transferred the building to the Town of Clinton Historical Society in 1995. The original slate covered, moderately pitched gable roof was replaced with metal in the early 21st century by the Historical Society.The still active surrounding cemetery contains over 100 headstones of slate in a plain Quaker style along with many marble and newer granite. The early tradition of marking graves with wood has also left nearly 100 unmarked graves which are noted on the July 1938 survey of the cemetery. The Peters family plot in the northwestern portion of the burial grounds was moved to make room for the Poughkeepsie and Eastern Railroad and is distinguished by its low enclosure.The Creek Meeting house was listed on the National Register of Historic Places in 1989 and is located directly across the street from the Clinton Corners Friends Church.