In the past 'Château-Verdun' was a Fortified House surrounded by nature, halfway between Aosta and the pass of Gran San Bernardo.
Since the 11th century, the House and its adjoining land has always served the Hospice of Gran San Bernardo, both as a refuge for travelers and donkeys and as a farm supplying the Hospice itself.
This mission has been carried out loyally for nine centuries, up until the present time, in the spirit of 'hospitality' which is characteristic of the canonics of Gran San Bernardo.
Château-Verdun has been completely restored in order to provide present day needs. Since 1991 it has become a guest house open to everybody.

Free:
- overnight stay for coach drivers and holiday representatives who are providing assistance to groups of at least 25 persons, organised by travel and tourist agencies;
- children from 0 to 4 years old.

Aosta Est motorway exit. Follow the signs for the Traforo del Gran San Bernardo (Gran San Bernardo Tunnel) (green signs) which after a short distance take you to the mouth of the tunnel which links with strada statale 27 (main road).
Go the whole length of the tunnel and then carry on along strada statale 27 (main road) of Gran San Bernardo, going past Gignod and Etroubles. At the entrance of the village of Saint-Oyen turn left towards Flassin / Château-Verdun.

The nearest train station is in Aosta. The bus station is in front of the train station.
Scheduled Coach service as far as Saint-Oyen (approximately 10 trips a day, fewer on Sundays). The holiday house is close to the bus stop.