Victoria Mansion, also known as the Morse-Libby House or Morse-Libby Mansion, is a landmark example of American residential architecture located in downtown Portland, Maine, United States. The brownstone exterior, elaborate interior design, opulent furnishings and early technological conveniences provide a detailed portrait of lavish living in nineteenth-century America. It was declared a National Historic Landmark in 1971 for its architectural significance as a particularly well-preserved Italianate mansion.