On the top is a cornice with a bronze bust of Queen Victoria by Count Victor G. Gleichen.
Harper's mausoleum includes structural elements such as columns whose capitals feature palm leaves, a cornice with a design of a vulture and sun disk, and lotus flowers are depicted on the double bronze doors to the mausoleum.
It was built between 1742 and 1751, and is a one-story, brick, Colonial structure with four-bay north and south facades, two-bay end walls, and a gable roof with modillioned cornice.
Its central portico with Corinthian columns is surmounted by a cornice supporting statues of the Dii Consentes sculpted by Luigi Marchesi and Gaetano Manfredini.
We do know that he became a master woodcarver by 1812 and did extensive work in the church at Sainte-Thérèse-de-Blainville which included some carpentry, woodcarving, and gilding as well as the structure housing the altar, rood-loft, cornice, and vaulting of this building.
The memorial, built from Portland stone ashlar, is a square pillar raised on three steps with a dentilated cornice, capped by a ball.