Olana State Historic Site is a historic house museum and property in Greenport, New York, near the city of Hudson. The estate was home to Frederic Edwin Church (1826–1900), one of the major figures in the Hudson River School of landscape painting. The centerpiece of Olana is an eclectic villa which overlooks parkland and a working farm designed by the artist. The residence has a wide view of the Hudson River Valley, the Catskill Mountains and the Taconic Range. Church and his wife Isabel (1836–1899) named their estate after a fortress-treasure house in ancient Greater Persia (modern-day Armenia), which also overlooked a river valley.

Olana is one of the few intact artists' home-, studio- and estate-complexes in the United States; it was designated a National Historic Landmark in 1965. The house is also a prime example of Orientalist architecture. It is owned and operated by the New York State Office of Parks, Recreation and Historic Preservation, and is also supported by The Olana Partnership, a non-profit 501 organization. The main building is an architectural masterpiece designed by the architect Calvert Vaux working closely with Church. The stone, brick, and polychrome-stenciled villa is a mixture of Victorian, Persian and Moorish styles. The interior remains much as it was during Church's lifetime, exotically furnished and decorated with objects from his global travels, and with some 40 paintings by Church and his friends. The house is intricately stenciled inside and out; Church designed the stencils based on his travels in the Middle East. The house contains Church's last studio, built as an addition from 1888 to 1890.