The Demarie-Valentin House was built by Jean-François Demarie around 1800 on the site of the former parish church of Saint-Michel-du-Tertre, destroyed during the Revolution. The interior layout of the Demarie-Valentin House is surprisingly unique in its neoclassical style: through the front door, a high staircase leads on to a round courtyard dominated by a circular balcony. The garden vestibule connects two octagonal rooms together, each in its turn giving passage toward wings embracing the garden; a colonnade lends the garden façade an "antique" allure. Bequeathed to the city of Angers by its last owner in 1958, the house was used to host the zoology collections. This building houses the museum's reception desk, the laboratory of taxidermy-restoration and part of the reserves. The Demarie-Valentin House has been registered as a national heritage site ("Monument historique") since 28 August 1995.