Mansion House - Credit: Wikimedia Commons
Mansion House, located near Public Landing, Maryland, United States, is an early-to-mid-19th century plantation house built as the main residence of a forced-labor farm of more than 250 acres. This "telescoping house" was built in five main parts beginning about 1835. The distinct blocks were designed in a manner that separated the main house from the enslaved servants' quarters while keeping them close at hand. Read more on Wikipedia
Source: en.wikipedia.org