The exhibition ‘Une seule promesse à la fois’ offers a artistic collaboration at the Galerie du Dourven in Trédrez-Locquémeau. Surrounded by a Breton landscape where the sea, land, and sky converge, this immersive experience is designed by artist Ulla von Brandenburg in collaboration with Benoit Résillot. Visitors are invited to explore an underwater universe filled with thirteen shades of blue, emphasizing the harmonious interaction between architecture and nature. The exhibition blurs the boundaries between the gallery’s interior space and its expansive outdoor environment, creating an engaging dialogue between folklore and universal themes. Engage with local legends through a visual perspective, allowing attendees to reflect on the atmospheric song of mermaids as they navigate between dream and reality. Running from 4 July to 27 September 2026, this exhibition is a must-see for art lovers and those intrigued by the relationship between culture and nature in Brittany.