The ancestral home of the Organa family, known as the Organa estate, was situated on the planet of Alderaan. Its destruction occurred in 0 BBY when the first Death Star, a weapon of the Empire, obliterated Alderaan.
While on Chandrila during the Yuuzhan Vong War, Jedi Jaina Solo encountered a villa that was a century old, and it brought to mind her mother's accounts of the family's estate.