Situated in the Parliament Hill borough, the building houses most notably the Ministry of Education, Recreation and Sports, the Ministry of Sustainable Development, Environment and Parks, as well the Observatoire de la Capitale observation deck.

The existing buildings on the site were acquired and demolished, however these two additional towers were never constructed.

[7] In 1987, the tower was officially renamed "Édifice Marie-Guyart" in honour of Saint Marie of the Incarnation (born Marie Guyart), an Ursuline nun who was the religious foundress of the Ursuline order in New France.

On the highest floor of the building, the Observatoire de la Capitale provides a 360 degree view of the city from a height of 221 meters.

Visitors can see the Citadelle de Québec, the Château Frontenac and the countryside surrounding Quebec City.