Designed in the XNUMXth century but remained unfinished, the French-style park leads to the main courtyard of the castle with a star-shaped layout and an octagonal central basin. To the north, a plantation of bicentennial lime and chestnut trees is listed as a Historic Monument.

The most original achievement was to have restored the water in the moat thus making the house and its garden island. The layout of the regular gardens in front of the Castle is still found today in the current lawn of the south terrace. All around, the liquid mass of the moat where the Castle is reflected and further on the gracious grove of trees, the hills, the meadows and the crops that surround the park.

Free information : Parking for 2 coaches. 3 sanitary facilities on site, one of which is accessible to people with reduced mobility. Unattended access to the moat.

Tips and Suggestions : Take advantage of your visit to visit the castle and its woodworking tool museum (traffic in the park is free and included in the ticket for the visit of the castle).
Possibility to take wedding photos in the park in a small group. Photos in the morning or in the afternoon, except in season when photos must be taken before 13:30 p.m. Hourly rate: 50 €



  • School groups welcome
  • Groups welcome


Additional visit:
Included with entry to the site: free visit of the woodworking tool museum and viewing of a documentary film on the flora and fauna of Longpra and the exhibition in French.


  • School groups welcome
  • Groups welcome

Visit languages

  • English
  • French

Individual visit services

  • Unguided individual tours permanently
  • Guided individual tours on request

Group visits services

  • Unguided group tours permanently
  • Guided group tours on request


The castle, the tool museum and the park are open to visitors all year round for groups by reservation (by email).
Summer opening for individuals.


From July 02 to September 30:
Open every Saturday, Sunday and public holidays from 14 p.m. to 18 p.m.
Every day from July 25 to August 15 from 14 p.m. to 18 p.m.


Reduced price: € 6 (access to the park and exhibitions without the guided tour of the castle).

Free for less than 7 years.

The full price (€ 8,50) includes the guided tour of the castle, the tool museum, access to the park, the screening of the documentary film and access to the current temporary exhibitions.

Payment method

  • Check
  • Cash



  • Parking lot
  • Screening Room
  • Parking nearby
  • Coach parking
  • Private parking lot


  • Coach access
  • Drop off on site for groups
  • Tourist Documentation
  • Guided tours

Activities on site

  • Animation
  • Children's entertainment
  • Concert
  • Temporary exhibitions
  • Show
  • Live Drama

Reduced mobility

Adapted tourism

  • Accessible for self-propelled wheelchairs
  • WC + grab bar + circulation space


From Grenoble, A48 motorway towards Lyon, Voiron exit N ° 10, then D1075 via Chirens, then D82 to St Geoire en Valdaine.

From Lyon take A43 and exit at exit 10 "Chimilin- Les Abrets" then take direction "les Abrets" and then direction Saint Geoire en Valdaine.

Access possible by bus with line n ° 7110 of the Trans'Isère network (Voiron - Pont de Beauvoisin), stop "Le Roulet"; plan a 1.2km walk or bike ride to reach the castle.