Historic Sites in Town

Longwood Estate

  • Contact: 631-924-1820
  • Address:
    Corner of Longwood Road and Smith Road
    (Estate entrance on Smith Road)
    Ridge, NY 11961

Information: The grounds of the historic Longwood Estate are open to the public Monday through Friday from 8 a.m. to 3 p.m. Picnic tables are available. Guided tours of the William Sidney and Eleanor Jones Smith home are offered. In addition, there is the Ridge Schoolhouse, a Barn, nature trails and the Smith Family Cemetery on the estate. Group tours available by appointment, please. Workshops and classes run throughout the year for ages 2 and above. Call for information. Saturday September 8th and Sunday September 9th, the Town of Brookhaven will host the Annual Town Fair at the Longwood Estate.

Black and white image of a three story home with porch

Swan River Schoolhouse

  • Contact: 631-654-1712
  • Address:
    31 Roe Avenue
    East Patchogue, NY

Information: One-room schoolhouse built in 1858. Mini museum open by appointment. Wheelchair accessible, restroom.

One story white boarded house

Historical Society of Greater Port Jefferson

  • Contact: 631-473-2665
  • Mather House Museum
  • Information: Six building complex open June through Sept on Tuesdays, Wednesdays, Saturdays and Sundays from 1 to 4 p.m. Some exhibits wheelchair accessible. Restroom. Annual Country Auction, October 13, 2018.
  • Address:
    115 Prospect Street
    Port Jefferson, NY 11777
Green and sepia etching of house

Ketcham Inn Foundation, Inc.

  • Contact: 631-878-1855 or 631-878-8862
  • Address:
    81 Main Street
    Center Moriches, NY 11934

Information: This historic Inn and Tavern, listed on the State and National Register, is located on the north side of a big curve in the Old Coach Road (CR 80) as you head east. The Ketcham Inn Foundation, Inc is now preserving the Inn, once a stop for many coach travelers, as a Living History Museum and Cultural Center. Tours are available by appointment. Ketcham Inn Book Barn, featuring antiquarian to local history books, is open April through December, Saturdays and Sundays, 10 a.m. to 4 p.m. Closed for rain.

Black and white image of a two story wood house

Museum, Manor of St. George

  • Contact: 631-281-5034 / Seasonal, call first
  • Address: William Floyd Parkway, Smith's Point, New York

Information: Home of Wm. Tangier Smith family and descendents. Open Thursdays, Fridays, Saturdays and Sundays, 10 a.m. - 4:30 p.m., May 1 to October 30. Free admission. Take William Floyd Parkway south. Look for sign on the west side of the Parkway, just before the bridge to Smith's Point Park.

Black and white image of a large home

Havens Homestead

Information: Havens-Pelletreau Homestead holds the Society's collections of artifacts, manuscripts and memorabilia. Museum shop in the barn. House remodeled by Isaac Green Jr. in 1898. Havens family produced four Town supervisors. Group tours available by appointment. Call for hours.

Havens Pelletreau Homestead

Bellport-Brookhaven Historical Society

  • Contact: 631-776-7640
  • Address
    31 Bellport Lane
    Bellport, NY 11713

Information: The Museum Complex consists of six major buildings and structures on two acres in the heart of Bellport Village. Hours are seasonal, Thursdays, Fridays and Saturdays, 11 a.m. until 4 p.m. Admission fee. Grounds include consignment shop.

Brookhaven Volunteer Firefighters Museum

  • Contact: 631-924-8114
  • Address:
    P.O. Box 367
    Fireman's Memorial Park
    Route 25, Ridge, NY 11961

Information: Museum maintains collection of apparatus and artifacts related to firefighting. Saturdays 10 a.m. until 4 p.m.; Sundays 12Noon until 4 p.m. Nov 1 to May 1, open Saturdays, 10 a.m. until 2 p.m. Admission free, donations welcome.

Farmingville Historical Society

  • Contact: 631-698-5293
  • Address:
    P.O. Box 311
    Farmingville, NY 11738

First Congregational Church of New Village

  • Contact: 631-451-8038
  • Address:
    Middle Country Road
    Lake Grove, NY

Information: Tours by appointment.

Greater Patchogue Historical Society

  • Contact: 631-654-1712
  • Address:
    P.O. Box 102
    Patchogue, NY 11772

Information: New museum on West Main Street - call for times.

Lake Ronkonkoma Historical Society

  • Contact: 631-467-3152
    Open Saturdays 10 a.m. until 2 p.m.
  • Address:
    P.O. Box 2716
    328 Hawkins Avenu
    Lake Ronkonkoma, NY 11779

Information: On site museum includes Indian artifacts, dolls, toys, baseball memorabilia, Maude Adams memorabilia. Open Saturdays, 10 a.m. until 2 p.m. Society meets first Wednesday of the month, 7 p.m., at the museum. Guests welcome, handicap access, no fee.

Fitz-Greene Hallock House

  • Address:
    3269 Pond Road
    Lake Ronkonkoma, NY

Information: 14-room farmhouse set on 31/2 acres. Annual House Tour, Last Saturday in September or by appointment. Owned and operated by the Lake Ronkonkoma Historical Society

Manorville Historical Society

  • Contact: 631-369-2250
  • Address:
    P.O. Box 2716 / P.O. Box 4 North Street
    Manorville, NY 11949

Information: Manorville School Museum includes restored schoolroom, local artifacts and thrift shop. Call for hours.

Moriches Bay Historical Society

  • Contact: 631-878-1776
  • Address:
    15 Montauk Highway
    Center Moriches, NY 11934

Information: The Havens House holds the Society's collections of artifacts, manuscripts and memorabilia. Call for hours.

Miller Place-Mount Sinai Historical Society

  • Contact: 631-476-5742
  • Address:
    P.O. Box 651
    75 North Country Road
    Miller Place, NY 11764

Information: The William Miller House (c. 1720) is the oldest house in Miller Place. Property includes five other structures.

Rocky Point Historical Society

  • Contact: 631-255-4304
  • Address:
    P.O. Box 1720
    Rocky Point, NY 11778

Information: Noah Hallock homestead open for tours. Please call ahead for schedule.

Terryville Union Hall

  • Cumsewogue Historical Society
  • Contact: 631-928-7622
  • Address:
    358 Terryville Road
    Port Jefferson Station, NY 11776

Three Village Historical Society

  • Contact: 631-751-3730
  • Address:
    93 North Country Road
    Setauket, NY 11733

Information: Three Village History Center is located in the Bayles-Swezey House at 93 North Country Road. Current exhibit is: SPIES How A Group of Long Island Patriots Helped George Washington Win the Revolution. See website for detailed list of events and times.

Wading River Historical Society

  • Contact: 631-886-1014
  • Address:
    P.O. Box 263
    300 North Country Road
    Wading River, NY 11792

Information: The Wading River Historical Society maintains the 1826 History House. Collections include local artifacts, vintage clothing, historic documents and local genealogy. Open by appointment; call 631-929-4082.

William Floyd Estate

  • Contact: 631-399-2030
  • Address:
    245 Park Drive
    Mastic Beach, NY 11951

Information: The estate contains the ancestral home, grounds, and cemetery of the William Floyd family. William Floyd, a Revolutionary War general and a signer of the Declaration of Independence, was born in the house in 1734

Yaphank Historical Society

  • Contact: 631-924-3401
  • Address:
    P.O. Box 111
    4 Yaphank Avenue
    Yaphank, NY 11980

Information: The Robert Hewlett Hawkins House at 4 Yaphank Avenue is the headquarters of the Yaphank Historical Society. Meetings are held the third Thursday, 7:30 p.m. at The Swezey Avey House. Call for hours and meeting times.