A luxury Sonoma estate that was formerly a nudist colony is on the market for $11.3 million. The secluded property on 130 acres sits atop Castle Rock and includes seven acres of private Cabernet vineyards. There’s also a modern 7,500 square foot home known as Agave House and two guest suites. The upper parcel is historic as it was a nudist resort back in the 1800s to early 20th century. Amenities include a reverse osmosis plant that can purify up to 10,000 gallons of water.