Best attractions and places to see around Four include a mix of historical sites, natural lakes, and religious buildings. This region offers diverse landscapes, from ancient castles perched on hills to tranquil bodies of water. Visitors can explore sites with significant historical backgrounds and enjoy natural settings suitable for various outdoor activities. Four presents a range of attractions for those interested in history, nature, and local heritage.
Last updated: October 5, 2026
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Fortified and enlarged in 1280 by Philippe de Savoie, it constituted a major strategic position facing the Dauphiné during the Dauphiné-Savoy wars. Abandoned in the 17th century, the estate was rehabilitated from 1969 by volunteers. The municipality has owned it since 1992. The site reveals an imposing circular keep, a chapel, ruined residential buildings and its fortified courtyards. Perched on the Relong hill, this historic site offers an exceptional panorama that extends to Lyon. It is also famous for having served as the setting for the very first episodes of the cult series Kaamelott by Alexandre Astier.
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The Voie Verte de la Bourbre is a secure development of about 8.5 kilometers reserved for non-motorized travel (bicycles, pedestrians, strollers, rollerblades). Managed by the CAPI (Communauté d'Agglomération de la Porte de l'Isère), it pleasantly follows the Bourbre river and today connects the towns of Bourgoin-Jallieu, L'Isle-d'Abeau and Vaulx-Milieu.
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Cool ruins! We really like them. 🤩
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Lovely view of the pond. A little cool spot when it's hot.
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Fallavier Castle is an old fortified castle, part of the heritage.
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On one of the high points of the hill of L'Isle d'Abeau, on the northern edge overlooking the hamlet of Didier and the quarries, is the location of the old fortified house of the Pollouds, a family mentioned in the 14th and 16th centuries. centuries. The Napoleonic land register shows that several buildings were still standing in the first half of the 19th century under the name of “Delay” castle (name of the farmer who bought the land after the Revolution). The chapel, circular in plan, occupies one of the towers of the old castle, as shown by the presence of three keyhole shooting slots. In the 1860s, the owner transformed this tower, then serving as a henhouse, into a public oratory, which he had decorated with a mural and a statuette of Saint Anne.
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Rosière Pond NATURAL HERITAGE Rosière Pond BACK TO THE LIST Rosière Pond© Martial-Couderette The Rosière pond is located to the north-east of the town of Bourgoin-Jallieu on the edge of the town of Ruy-Montceau and offers an ideal relaxing setting. The association “Les Amis de Rosière et de la Nature” manages the pond made available by the city. The Rosière pond, fed by the Loudon stream, was built in the 18th century to power a hemp mill (the current restaurant). This pond was the property of the GENIN family for a long time before being bought by the town of Bourgoin-Jallieu in 1978. Since then, the town of Bourgoin-Jallieu has done everything possible to make this site a protected natural place, walks and hikes and a fishing spot. Many hiking trails start from the pond. Source: Isère Tourism
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The N.D de la Salette chapel was built in 1866. Nestled on a promontory belonging to the commune of Veyssilie, it offers a lovely view of the Isère plain.
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Visitors to Four particularly enjoy Lake Saint-Quentin-Fallavier for its relaxation and mountain biking opportunities, and the historic Château de Fallavier, a castle with over 1000 years of history. Another favorite is Étang de la Rosière, a protected natural pond with hiking trails.
Yes, the region offers several family-friendly spots. Lake Saint-Quentin-Fallavier is ideal for relaxation and activities like mountain biking, with pleasant surroundings and available parking. Étang de la Rosière is also a protected natural place with walking paths and a fishing spot, perfect for a family outing.
The Four region is rich in history. The prominent Château de Fallavier, built on the Relong hill, is a strategic location with over a millennium of history, featuring two walls and a keep. You can also explore Chapelle Sainte-Anne, a historical religious building that was once part of an old castle tower.
The region boasts beautiful natural settings. Lake Saint-Quentin-Fallavier offers a relaxing environment with opportunities for outdoor activities. Étang de la Rosière is a protected natural pond, fed by the Loudon stream, offering tranquil walks and a fishing spot.
Yes, there are several hiking opportunities. From Étang de la Rosière, many hiking trails begin, allowing you to explore the protected natural area. For more options, you can find various routes in the Hiking around Four guide, including moderate trails like the 'Tranquility of a pretty stream loop'.
Absolutely. Lake Saint-Quentin-Fallavier is known for offering mountain biking opportunities. The area around Château de Fallavier is also described as a 'magical place for maneuverability on mountain bikes on old stones'. For more cycling routes, check out the Cycling around Four guide, which includes routes like the 'Lake Saint-Quentin-Fallavier – Château de Fallavier loop'.
The region features significant religious buildings. The Our Lady of La Salette Chapel, built in 1866, is nestled on a promontory and offers a lovely view of the Isère plain. Additionally, Chapelle Sainte-Anne, a circular chapel, occupies one of the towers of an old fortified house.
Visitors appreciate the serene and relaxing atmosphere of the lakes. Lake Saint-Quentin-Fallavier is praised for its pleasant setting and as a nice spot for hot days. Étang de la Rosière is valued as a protected natural place with beautiful views and walking opportunities.
Yes, for Lake Saint-Quentin-Fallavier, there are plenty of parking spaces available, making it convenient for visitors.
Yes, the Our Lady of La Salette Chapel, located on a promontory, offers a lovely view of the Isère plain. The Château de Fallavier also provides a viewpoint from its strategic position on the Relong hill.
Beyond hiking and cycling, you can enjoy fishing at Étang de la Rosière, which is a designated fishing spot. The lakes also offer general relaxation and opportunities to enjoy nature.


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