Mary Tyler Moore’s Connecticut home is coming on the market for $21.9 million.

The late actress and her husband Dr. S. Robert Levine bought the roughly 7-acre Greenwich estate for around $10 million in 2006, Levine said. Moore, famous for her role as a career woman on “The Mary Tyler Moore Show,” died in 2017 at age 80.

Levine said the decision to sell the house was “massively difficult,” but necessary for him to move on after his wife’s death.

“It’s Mary’s house,” said Levine, a retired cardiologist. “If I’m going to step into my ‘what next?’, I decided I have to step away from the house.”

The Georgian-style house, which is thought to have been built in the late 1800s, has a spa, a double-height solarium and a billiards room, Levine said.

Levine said when the couple bought the house, they had been maintaining a home on Manhattan’s Fifth Avenue as well as a 150-acre horse farm in Millbrook, N.Y., and they were looking to simplify. Greenwich offered the best of both worlds, he said.

“It was so private and protected and yet so close to Greenwich Avenue,” Levine said. “We couldn’t run away completely from Manhattan. [Mary] needed her fix, to be able to window shop.”

The pair embarked on a roughly three-year project to reimagine the fieldstone house, tearing down almost everything but the front facade. “It looked like a movie set,” Levine said.

They reused much of the original stone in the construction of their new house and found matching fieldstone from local quarries for an addition. They used elements of the architecture of Monticello, the Thomas Jefferson estate in Virginia, adding round windows and rails. Altogether, they expanded the property from about 7,500 square feet to around 14,000. In all, the project cost close to the property’s current asking price, Levine said.

“This was not built for return on investment,” he said. “It was built for Mary, to match her image of the perfect place.”

In the entryway, which features a dramatic curving staircase and harlequin-patterned floors, they installed a wall of windows that looks out to the garden. They also added a skylight above the stairs to bring in more light.

The house has a gym with a ballet barre and floor-to-ceiling mirrors for Moore, who was a trained dancer. The spa area has a massage room, a Jacuzzi and a sauna. The property also has a large outdoor pool.

Among the five-bedroom property’s most unusual features is the solarium. Some of its windows are stained-glass art pieces salvaged from old churches and synagogues, Levine said. His wife, who suffered from diabetes and was in ill health for some time before her death, liked sitting there in her final years, he said.

“It was Mary’s serenity room, and where she spent a good part of her life when she was no longer able to get around as easily on her own,” he said. “That was her special place.”

The billiards room was inspired by one that Moore’s grandfather had in his home in Virginia’s Shenandoah Valley when she was growing up. On the shelves are some of the books that her father read to her as a child, Levine said.

Located in its own wing, the primary suite has dual dressing rooms. Moore specifically requested a closet with 100 linear feet of hanging space for her clothes, her husband said.

The house was designed to display Moore’s collections of antiques, folk art and Americana, her husband said. “This was a place to live, but also a place to display all of her beautiful things so that she could be surrounded by all the things she loved,” he said.

Levine said a portion of the proceeds from the sale will go to support the Mary Tyler Moore Vision Initiative, a foundation that seeks to preserve and restore vision in people with diabetes.

Moore initially made her name in the 1960s playing Laura Petrie on “The Dick Van Dyke Show.” She was nominated for an Oscar for her role in the 1980 film “Ordinary People.”

Listing agent Joseph Barbieri of Sotheby’s International Realty said he sees continued demand for trophy homes in Greenwich, and noted that buyers are contending with drastically low inventory. Last month Copper Beech Farm, a roughly 50-acre Greenwich estate, sold for $138.83 million, setting a record for the most expensive home ever sold in the state.