The former residence of Campbell in Toronto, built in 1822 by Chief Justice William Campbell and his wife Hannah in Canadian history, is located in the center of Toronto and the oldest existing building on the site of Yorktown. The overall design of the former residence is intended to create a pleasant and comfortable atmosphere. Campbell's former residence is one of the few Georgian-era buildings left over from Toronto. It also has the fashion sense of the late Georgian era. This architectural style is also known as Palladio architecture.