The house of Walter Mathis, now a property of the National Trust, opened for tours in October 2010. Walter Mathis was the investment banker who saved the King William neighborhood from decay and promoted its restoration. The mansion he bought for his home dates from 1876 and was built in the style of an Italian villa. Mathis was a great collector of the fine and decorative arts. He enjoyed the works of artist Mary Bonner and was an admirer of French culture. The collection has several works of hers and lots of French furniture and art objects. Evidently, he was intrigued by Napoleon and even acquired one of the emperor's death masks. Tours of the house and the collection last about an hour and are limited to six people. You need to call ahead to make reservations. I expect that changes in scheduling will occur as this museum acquires a routine, and accommodates public interest -- check the website before going to San Antonio.