The last house I visited in Kashan was the Borujerdi House. In my opinion, this was the least impressive, and most of the rooms were off-limits to visitors. The only place we could visit was the courtyard as well as the throne area or stage of the house, facing the courtyard.
This house was built in the late 1800's: according to the story, the merchant Seyyed Mehdi Borujerdi fell in love with the daughter from the affluent Tabātabāei family, and one condition of the marriage was that the house where the daughter should live should be as lavish as the Tabātabāei House. I cannot check the rest of the rooms, but at least the courtyard is indeed lavish. You can see the architectural styles and features and it definitely is eye-catching.
This house was the last thing I saw in Kashan. After spending two nights, it was time to move on, this time to Isfahan.