The country mansion of late billionaire philanthropist David Rockefeller is up for grabs for $22 million — take a look inside

A home built by the Rockefeller family in 1938 has gone up for sale for the first time in more than 70 years, asking $22 million.

The 75-acre estate, known as Hudson Pines, was the longtime country home of the late billionaire philanthropist David Rockefeller, who died in March at the age of 101.

Rockefeller was the former CEO and chairman of Chase Manhattan Bank, and he was the last surviving grandson of John D. Rockefeller, the famous oil tycoon. He was a noted philanthropist and a signer of the Giving Pledge, an agreement to give away the majority of one's wealth.

Rockefeller and his wife, Peggy, who died in 1996, split their time with their family between a Manhattan townhouse and this estate in Pocantico Hills, New York.

David Turner and Anthony Cutugno of Houlihan Lawrence are listing the home, which has 11 bedrooms and more than 11,000 square feet of space.

Let's take a look around.

The estate comprises 75 acres of land near the Hudson River.

Architect Mott Schmidt — known for his work with other affluent families, like the Astors and the Vanderbilts — built the main house in 1938. According to the listing, David Rockefeller bought the house, which was originally built for his sister, Abby Rockefeller Milton, in 1946.

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Many of the architect's signature design details, like this floating staircase, remain around the home.

The home has 11 bedrooms in total, in addition to 12 full bathrooms and three half-baths.

The dining room has its own fireplace and views of the surrounding valley.

The library also has a fireplace, as well as wood-paneled walls.

This living room offers views of the valley and the Hudson River.

Outside, there's a pool ...

... landscaped lawns and orchards ...

... as well as stables, a barn, staff quarters, a greenhouse, and a carriage house. Rockefeller collected antique carriages on the property.

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Rockefeller was an avid entomologist. He kept some 130,000 specimens of beetles, which will be moved from the mansion to Harvard's Museum of Comparative Zoology.

There are also several gardens.