You arrive by train:
The nearest station is Verneuil-sur-Avre.
From Paris: take the train at the Paris-Montparnasse station, direction Argentan.
From the Verneuil's station to the village, you can take a shuttle (for admission): on Mondays and Fridays, at train's arrival 10:15 am and 2:00 pm.
For others schedules, you can call a taxi.