The Adamson Estate, which forms the eastern boundary of Port Credit, Ontario, was purchased from the family of Agar Adamason by the City of Mississauga in 1974 upon the urging of a local taxpayers group, after a real estate development which would have changed the character of the neighborhood was proposed.

Adamson Estate is now a public park on the Waterfront Trail. The Adamson legacy comes from supplying white pine logs for masts in the Royal Navy of Britain. The architecture of the main house, often thought to be Spanish is actually Flemish, one of the areas in the European theatre in which Agar Adamson fought during the First World War.

One of the treasures of the Adamson Estate are the great eastern white pine which have ties to the heritage of the Admason families and that of the early development of Toronto Township now known as Peel region.