A 6-acre Vanderbilt equestrian estate from the Gilded Age is listed for $3.5 million. Take a look inside.

• Sandy Point Farm was built in 1902 for Reginald Claypoole Vanderbilt in Portsmouth, Rhode Island.
• His father, Cornelius Vanderbilt II, built the Breakers mansion in Newport.
• Sandy Point Farm, now listed for $3.5 million, has 24 stables and a 15,000-square-foot riding arena.

Rhode Island is full of architectural marvels from the Gilded Age, but these historic properties rarely hit the market.

That’s what makes Sandy Point Farm, a 1902 equestrian estate that belonged to a Vanderbilt heir, a rare find.

Sotheby’s Concierge Auctions is listing the 6-acre property for $3.5 million. It will open for bidding on October 17.

Take a look at the historic estate.