Bette Midler’s Fifth Avenue penthouse went up for sale late this summer with a nice even asking price of $50 million. The Divine Miss M and her husband, Martin von Haselberg, have called the aerie a primary residence since the late 1990s, and over the years have revised it to suit their collective taste.

The co-op occupies the top three floors of the classic residential building, which dates to 1925. The three floors of the unit are connected by a pair of staircases; a simple wood-tread affair stands between first to second floor, and between second and third a splendid curved floater takes over.

Warmly finished hardwood plank runs throughout the penthouse, which is generally warm and bright as a rule. Standout spaces include the library, which features floor-to-ceiling built-in bookshelves accessed by a rail ladder, the solarium alcove, and the second-floor gallery, where the staircases and their possibilities converge, and glass doors open broadly to the terrace.

Which is extraordinary. This wraparound outdoor living area is landscaped as a lush, parklike sanctuary in the sky, and features marvelous views of the park and city.