A six-story, limestone mansion on the Upper East Side, with a long list of amenities, including a lower-level fitness center with a pool, gym and massage room, finally sold after more than six years on the market and several price cuts.

The building, at 12 East 63rd Street, between Fifth and Madison Avenues, was purchased by an anonymous buyer for $56 million. This was New York City’s biggest closing in February, and the second highest so far this year, though the sale price fell far short of the $77 million initially sought in November 2015.

In the month’s other prominent closed transactions, Norman Lear, the prolific television writer and producer, and his wife, Lyn Davis Lear, a film producer, sold their apartment at 15 Central Park West. The couple were among the condominium’s first residents.

The president of Columbia University, Lee C. Bollinger, and his wife, Jean Magnano Bollinger, an artist, bought a co-op at the Beresford, also on Central Park West. And several blocks away, on Riverside Drive, the longtime home of the comedy team Jerry Stiller and Anne Meara sold for $1 million over the asking price.