The Windsor House is a late 18th-century Georgian residence on Water Street in Saint Andrews. The house was built in 1797 for United Empire Loyalist Capt. David Mowat and his wife, Mehitable Mowat (nee Calef). It is a large, two-and-a-half-story Georgian-style building with a symmetrical five-bay façade, a central entrance, and balconies along both stories of the front façade. Capt. Mowat was an expert mariner and served as a member of the Legislative Assembly for Charlotte County. However, he tragically perished in 1810 in a shipwreck off the coast of Maine, leaving the widowed Mehitable with ownership of the house.
 
Sometime afterwards, Mehitable learned of a nearby woman whose husband had gone to England and left her to dig clams daily to feed their eight children. Moved by the story, Mehitable went to see the struggling family, bringing along a hamper of food to feed them. She had the family relocated via boat to her home for six months until the father returned. The children's father was Henry Goldsmith, nephew of the famous Irish writer Oliver Goldsmith. One of the children, also named Oliver Goldsmith, would go on to become the first person born in Canadian to publish a poetry book. Mehitable's act of kindness has become an important part of St. Andrews folklore.
 
Mehitable would live in the house up until her death in 1860 at 92 years old. In 1873, the Mowat family sold the residence, which soon reopened as the popular Morrison Hotel, which operated until 1940. A restoration was performed in 1990, and the house currently serves as a bed and breakfast.