Built at the turn of the 20th century for James E. Nichols and designed by C.P.H. Gilbert, 4 East 79th Street has lived several lives: private Gilded Age mansion, crime scene, diplomatic address, subdivided residence, and ultimately a painstakingly reconstructed single-family home.

Sport Island sits in New York’s Thousand Islands, the St. Lawrence River archipelago along the Canadian border that became one of the Gilded Age’s fashionable summer destinations. Built around 1880 for a prominent Pennsylvania railroad-industrialist family, the property has since undergone a substantial partial restoration.

A 1774 Hudson Valley farmhouse is for sale with the historic barn where Joan Osofsky founded Hammertown, the much-loved furnishings and antiques business that helped shape the region’s relaxed country style.

A seven-story Beaux-Arts mansion — once home to a Russian prince and later restored from a shell — has come to market at $29.75 million.

On the market for the first time in over 200 years, Lake Delaware Farm dates to 1787, when Gertrude Livingston and Revolutionary War general Morgan Lewis built it while the Catskills were still largely untamed, densely forested, and home to Native American tribes.

Built in the 1920s by Woodstock artist Paul Arndt, Library Lane combines a restored stone house, former painting studio guest cottage, and Michael Trapp-designed gardens on 1.6 acres in Woodstock, New York.

For less than the price of many luxury apartments in New York City, buyers can purchase a private island with a 1912 cottage in Connecticut's Thimble Islands.

In the 1980s, when Nasser Nakib was a junior architect working in Soho, he used to slip over to Bond Street on his lunch breaks just to stand on the cobblestones. “In Provence you’re in a lavender field and you think, I could die happy here,” he says. “In New York, this block is it for me.”

Set in the foothills of the Catskill Mountains, the 148-acre (59.9-hectare) property comprises a carefully renovated mid-century country house (and its pool and two guest houses) positioned with open views across the Hudson Valley.

The property went into foreclosure in 2024 and was listed for sale by the lender. It is located on Truesdale Lake, a private residential lake community developed in the 1920s.