Violinist Itzhak Perlman, a renowned virtuoso, and his wife Toby Perlman, co-founder of the Perlman Music Program, listed their New York City townhouse last month for $17.5 million. And thanks to the home’s extravagant features, the real estate news was trending online.

Nestled on the Upper West Side at 21 W. 70th St, the property is right near Central Park. But it boasts another rare NYC luxury: 1,500 square feet of private outdoor space, in addition to 8,000 square feet of interior space.

In all, the home includes six bedrooms, five bathrooms, six fireplaces, powder rooms, a great room, a massive chef’s kitchen, and a dining room set with skylights. There is also an entire spa level with an indoor swimming pool and sauna.

Richard Steinberg of Compass is representing the classical music superstars throughout the sale.