In 1904, the Hungarian-German immigrant Guillermo Kahlo built a house in the Coyoacán neighborhood of Mexico City. There, he would raise his children and establish himself as a sought-after photographer, documenting the region’s Colonial architecture. One of his daughters, Frida, would even help her father in the dark room, developing negatives, retouching photos, and arguably beginning her artistic education.

As an adult, Frida Kahlo would occupy the same house with her husband, Diego Rivera, transforming it into a gathering place for great personalities of the era: Leon Trotsky, Henry Moore, André Breton. The house has had a vibrant afterlife as well. In 1958, four years after Kahlo’s death, it was converted into the now-beloved Museo Frida Kahlo (known to many as Casa Azul), which vies with the National Museum of Anthropology for the rank of most-visited museum in Mexico City.

Salma Hayek, paying tribute to one of Kahlo’s most iconic paintings, 1939’s The Two Fridas, for Vogue.

Photographed by Annie Leibovitz, Vogue, December 2001

Last night, a new chapter in Kahlo’s story was announced at the Park Avenue residence of Christine and Stephen Schwarzman: The public opening of a Museo Casa Kahlo, adjacent to the storied Casa Azul, will take place on September 27. Already dubbed “Casa Roja,” the building where the new museum will be housed was originally owned by Frida Kahlo’s parents; she later purchased it from them as a home for her sister Christina and Christina’s family.

“Cristina was by her side through so much,” says Frida Hentschel Romeo, Kahlo’s great-grand-niece, “traveling with her to New York for her first major exhibition, supporting her through surgeries and recovery.”

Frida Hentschel, Mara Romeo Kahlo, and Mara De Anda Romeo

Photo: Julieta Cervantes

Kahlo’s closest living descendants—Mara Romeo Kahlo (Christina’s granddaughter and Kahlo’s grand-niece), her daughter Mara Deanda Kahlo (Kahlo’s great-grand-niece), and Hentschel Romeo—came to New York to publicize the new institution. “For the first time, the voice of the family will be at the heart of how Frida’s story is told,” says Hentschel Romeo. “This museum isn’t just about her work—it’s about her world. It’s about how the people closest to her shaped who she became. And it’s also about the living family—those of us who carry her legacy forward.”

The museum will exhibit personal items that have never been shown before, including letters, childhood photographs, a piece of embroidery Kahlo made at the age of five, dolls, jewelry, clothing, and the very first oil painting she ever created. This was the painting, says Hentschel Romeo, that Kahlo showed to Diego Rivera to determine if she had the skill to become a painter. “It is incredibly moving to see up close,” she adds. The museum will also showcase a newly discovered mural—believed to be the only Frida Kahlo mural in existence.