Mantinum Intervention, a landscape Architecture project in Bastia, France, was designed by Buzzo Spinelli Architecture, a Paris-based Architecture firm. The project had three objectives: first, to create a pleasant connection between the port and Bastia Castle, second, to design a green theatre, and last, but not least, to restore the Romieu Garden.

Located on a very steep slope in the heart of the castle, the project expresses the goal of reclaiming the castle, which has become a medium for the development of the public space between the city and the water. From viewing platforms to platforms, from stairs to ramps, from gardens to plazas, the project increases Spaces for contemplation and walking, offering visitors a sequential route choice that alternates between horizon openings and narrow formations of rocks, walls and vegetation.

Architecture stands out here as a tool for resolving and clarifying the geometries of the site, hence the adoption of plain writing which borrows from the adjoining walls their roughness and mass. The shape of the elevator is similar to a retaining wall leaning against the rocks, in continuity with the parapets of the citadel. Materials are at the heart of the project's intentions. A measured and fair choice is translated in the use of aggregates extracted from the cliff for the production of a unique concrete. 

Concrete with its asperities and hues, reflect thereby deeply the site and refer to the identity of the rocks on which the project leans. The absence of transport or importation, and the ex-nihilo extraction of materials are a responsible economic choice that benefits the execution and the handwork. This anchoring of the project to the Corsican territory by its materials, it is seeking of an implementation mixing know-how and long duration, testifies of a general engagement towards contemporary architecture; which is in turn articulated around the values of modesty, demanding nature, as well as social and environmental responsibilities.