Bette Midler is selling her longtime family home on the Upper East Side, an airy triplex with lush landscaped gardens, complete with composter and shed, and sweeping vistas of the Central Park reservoir and Midtown skyline.

Ms. Midler, an award-winning entertainer, and her husband, Martin von Haselberg, a performance artist, bought the penthouse at 1125 Fifth Avenue and 94th Street in 1996. The venerable prewar co-op proved a perfect fit: It’s near the school their daughter, Sophie von Haselberg, attended, has a full-time doorman to assure privacy, and is a short drive from the theater district and Carnegie Hall.

But at around 7,000 square feet — and that’s not even counting the additional 3,000 square feet of outdoor space — the apartment is too big for the empty-nester couple, and so they’re placing it back on the market. The asking price is $50 million, according to the listing broker, John Burger of Brown Harris Stevens, with $25,515 in monthly maintenance.