Eight listed monuments and sites are indexed in the territory of Ottignies-Louvain-la-Neuve.

Ottignies-Louvain-la-Neuve has exceptional heritage sites, some dating back to the Middle Ages, of which the main example is the Moriensart Tower in Céroux.

At least five remarkable churches and old farms are scattered here and there.  The farms are often transformed into exhibit or meeting places like the Douaire Farm in Ottignies and the Biéreau Farm in Louvain-la-Neuve.

The few castles of the city, including the famous Castle of Ottignies and Castle of Limelette, complete this old stone landscape with an ever present charm.