From St. Etienne (east) go towards Le Puy en Velay and take on the 4-lane exit N88 Bass and Basset. After Bass Basset you follow the main road through Beauzac, Jussac, Lingoustre to Craponne sur Arzon. Then continue to La Chaise Dieu. Take the exit towards Brioude and Cistrières through D19. After Cistrières turn left on the D568 towards Le Fronvel and Berbezit. Stay on the main road (by Le Fronvel and Lermitagne). Coming from the north Lugeastre inside, go to Lugeastre Bas right (just before a blue mosaic wall plate right on a wall with "Lugeastre") and immediately turn left into the narrow road.
From Paris (A75/E11) direction from north, take exit 20, Brioude. Follow the N102 towards Le Puy en Velay. Take the 3rd roundabout take the 5th exit * La Chaise Dieu. Next roundabout take 1st exit towards La Chaise Dieu. Then 1st road to the right to Fontannes, follow (in Fontannes) Paulhaguet. Approximately 2 km after Frugières-le-Pin Gare take the left turn to Vals le Chastel/Saint Didier sur Doulon. Follow the road into Vals le Chastel (D56). Stay on the main road towards Saint Didier sur Doulon and take after Vals le Chastel the 1st road to the right to Lugeastre/Berbezit (photo below). Follow this road 5 km uphill and follow in Lugeastre the signs Le Grand Trianon.
From Montpellier (A75/E11) to the north on the highway A75/E11, take exit 22 Brioude. Make sure you follow after Brioude the N102 towards Le Puy en Velay, but at the roundabout take the exit La Chaise Dieu. (* See below Paris).