The park was originally the estate of a wealthy 18th-century shipowner, Thomas Dobrée.
Its 'Bay Garden' (Jardin des Bays) is designed specifically to represent geographical biomes from across the globe.
The park contains one of the oldest and largest Ginkgo biloba trees in the Nantes region.
The greenhouses are temperature-controlled to mimic tropical climates for exotic plant species.
The park serves as a teaching ground for the nearby Lycée Professionnel des Métiers de l'Horticulture et du Paysage.
The site includes a 'rocaille' or rock garden, a style popular in 19th-century French landscaping to imitate natural terrain.
Parc du Grand Blottereau is the largest park in Nantes, covering 22 hectares on a hillside overlooking the Loire Valley. It features a unique 'Bay Garden' structure, which divides the park into distinct zones showcasing plants from different continents, including America, Asia, and Africa. The park houses a notable collection of tropical plants within its extensive greenhouses, which were historically significant for botanical research. Visitors can explore the rocaille garden and a systematic botanical garden that serves as an educational resource. The site incorporates a former 18th-century chateau, known as the Château du Grand Blottereau, which now houses a horticultural high school. Much of the landscaping follows the principles of exotic adaptation, reflecting the city’s historic role in international trade and botanical exploration. It functions as a public arboretum with a diverse collection of trees, including rare specimens.
Inside the main tropical greenhouse, framed by the exotic foliage and glass architecture.
Bring a camera specifically for the greenhouses, as the light and plant density are ideal for photography.
The park is hilly; wear comfortable walking shoes to navigate the slopes and terraced paths.
Check the greenhouses first, as they often have different operational status compared to the main park grounds.
Attempting to walk the entire perimeter if you have limited time, as the park is significantly larger than typical urban squares.
Greenhouses may have restricted access during specific botanical maintenance periods or private school events.
Stay on marked paths in the botanical zones to protect rare plant specimens; pets must remain on a leash.
