curved surfaces, however, remains challenging for engineers. These challenges can, for example, be observed in the case of thin-walled structural elements, which are very popular due to their combination of lightness, load transfer efficiency, [11][12][13][14] and low cost. Although an initially flat panel can be reasonably bent in a single direction to adapt the shape of an arch, transforming the panel into a shell dome or a saddle and, thus, changing its Gaussian curvature remains challenging. [15][16][17][18] Several studies have used computer-aided design using conformal geometry, [19,20] origami, [21][22][23][24][25][26][27][28][29][30] kirigami, [31,32] or crumpling [33,34] approaches to create curved objects from flat sheets. However, these approaches rely on very thin sheets and only lead to an approximation of the desired curvature. Other techniques based on non-uniform swelling [35,36] or inflation [37] or liquid crystal phase transition [38] have also been proposed, but these structures are made of soft materials and may not be suitable for large-scale and/or load-bearing structures. "Bending-active system" [39,40] is another approach to create form-finding structures. These form-finding structures rely on the elastic deformation of a combination of several structural elements (e.g., vector-active, surface-active, form-active, etc.) that are initially planar or straight. [40][41][42][43][44] Therefore, individual curved beam, shell, or membrane elements of bending-active systems remain elastically constrained and can carry residual bending stresses. [40] Therefore, patterningThe design of advanced functional devices often requires the use of intrinsically curved geometries that belong to the realm of non-Euclidean geometry and remain a challenge for traditional engineering approaches. Here, it is shown how the simple deflection of thick meta-plates based on hexagonal cellular mesostructures can be used to achieve a wide range of intrinsic (i.e., Gaussian) curvatures, including dome-like and saddle-like shapes. Depending on the unit cell structure, non-auxetic (i.e., positive Poisson ratio) or auxetic (i.e., negative Poisson ratio) plates can be obtained, leading to a negative or positive value of the Gaussian curvature upon bending, respectively. It is found that bending such meta-plates along their longitudinal direction induces a curvature along their transverse direction. Experimentally and numerically, it is shown how the amplitude of this induced curvature is related to the longitudinal bending and the geometry of the meta-plate. The approach proposed here constitutes a general route for the rational design of advanced functional devices with intrinsically curved geometries. To demonstrate the merits of this approach, a scaling relationship is presented, and its validity is demonstrated by applying it to 3D-printed microscale meta-plates. Several applications for adaptive optical devices with adjustable focal length and soft wearable robotics are presented.