The most magnificent barn in Haddam, the Hazenhurst Dairy Barn sits along the west side of Saybrook Road facing Haddam Meadows State Park. A real estate advertisement from the early 20th century states the building is a "modern" dairy barn fully equipped with milking machines, refrigeration, steam sterilizing outfits and more. Tie ups for 38 cows, 7 calfs and maternity box stalls, one herd sire box stall, and storage fro 200 tons of hay and 60 tons grain overhead. It was purchased by gentleman farmer Edward Hazen in 1913-1915. Records indicate that the barn was built in 1900 although local tradition states that the barn is actually two older barns that were moved together to create this monumental structure. One barn came from the Arnold property just south of the old burying ground. The barn exhibits vertical plank sideing with gable end to street. The massive roof is highlighted by two ornate cupolas which provide ventilation. Two silos were once featured on the north facade and made of cast blocks. Fenestration and entries are found on the ground floor. The building is currently in a state of deterioration. A small house, formerly a dairy building is attached to the southern elevation.