This worthy structure is the Knaut-Rhuland House in Lunenburg. It was designated a National Historic Site by HSMB (Historical Sites and Monuments Board of Canada) and is one of the best-preserved c18 houses in Canada. Isn't that cool? That makes it one of the very special buildings in an old town that is a UNESCO World Heritage site because of its wonderfully preserved townscape.
The house was built around 1793 (!) and is considered a fine early example of British classicism, which is the formal refined architectural style based on ideas from classical Greece and Rome - those being harmony and proportion. We commonly know the style as Georgian - more elaborate later versions are called neoclassical. Georgian features include the small sash windows - of course, glass was a rare commodity and panes were necessarily small -the symmetrical five-bay front, the doorway with sidelights, transom and entablature above, the chimneys and steep gable roof. Of course, the house has touches of the local fine craftsmanship in wood - such as the brackets in the Lunenburg style at the upper corners. The house is refined by the placement of planks at the corners, between ground floor and basement, and at the eaves. You see this type of detailing later on in neoclassical styles - the flat planks become fluted to recall pillars and topped with capitals of one of the Greek orders. But in this case, the wood is unornamented, plain, and reserved.
I understand the interior is amazing - a centre-hall plan, refined wood detailing, high quality carpentry.
I did not spend long enough in Lunenburg - but then again, I'm not sure how long it would have taken...