Wikipedia
Châteauesque (or Francis I style, or in Canada, the Château Style) is a revival architectural style based on the French Renaissance architecture of the monumental French country houses (châteaux) built in the Loire Valley from the late fifteenth century to the early seventeenth century.
The term châteauesque (literally, "like a château") is credited (by historian Marcus Whiffen) to American architectural historian Bainbridge Bunting although it can be found in publications that pre-date Bunting's birth. As of 2011, the Getty Research Institute's Art & Architecture Thesaurus includes both "Château Style" and "Châteauesque", with the former being the preferred term for North America.
The style frequently features buildings incongruously ornamented by the elaborate towers, spires, and steeply-pitched roofs of sixteenth century châteaux, themselves influenced by late Gothic and Italian Renaissance architecture. Despite their French ornamentation, as a revival style, buildings in the châteauesque style do not attempt to completely emulate a French château. Châteauesque buildings are typically built on an asymmetrical plan with a roof-line broken in several places and a facade composed of advancing and receding planes.