Mansion House - Credit: Wikimedia Commons
Mansion House on Kawau Island, New Zealand, is a house that was owned by Sir George Grey from 1862 to 1888. Built in 1845 as the house for the manager of a copper mine on the island, it was extended significantly by Grey during his ownership. Mansion House is a heritage listed building. It is open to the public as part of the Kawau Island Historic Reserve administered by the Department of Conservation. Read more on Wikipedia
Source: en.wikipedia.org