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A historic Park Avenue mansion with deep political ties has been listed in New York City for $12.5 million.

Known as the Catherine Auchincloss Mansion, the property was originally constructed as a brownstone in 1872, at the dawn of the Gilded Age, according to Realtor.com. It boasts all the grandeur and elegance one would expect of one of Manhattan's oldest single-family homes.

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Built by developer Christopher Keyes, the property at 123 E. 69th St. on the Upper East Side underwent a significant transformation in the early 1900s after Andrew Agnew bought it as a gift for his socialite daughter Catherine and her new husband, importer Edgar Stirling Auchincloss.

The Auchinclosses had four children together, all raised in their family home. Edgar Auchincloss died in 1910, just a few years after he and Catherine married. Catherine, who never remarried, lived in the house until 1950.

Catherine Auchincloss was a visionary when it came to preserving the home. She remodeled the residence multiple times, ensuring it remained historically accurate and contemporary.

The property's allure extends beyond its architectural elegance. It also has a connection to former first lady Jacqueline Kennedy Onassis. Catherine's nephew Hugh Auchincloss became the stepfather of John F. Kennedy's wife.

Unlike many cramped Manhattan apartments, the Catherine Auchincloss Mansion offers ample space and modern amenities. The 8,000-square-foot residence has 18 rooms, including six bedrooms, a staff bedroom and seven bathrooms.

Its luxurious features include six working fireplaces, an elevator, a gym with a sauna, a game room and an art studio featuring a 20-foot-high skylight.

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This is a paid advertisement. Carefully consider the investment objectives, risks, charges and expenses of the Fundrise Flagship Fund before investing. This and other information can be found in the Fund's prospectus. Read them carefully before investing.