The expansion of nanomagnetism to three dimensions provides exciting opportunities to explore new physical phenomena and opens great prospects to create 3D magnetic devices for green computing technologies [1]. In this talk, I will present some of our recent works dedicated to the investigation of three dimensional artificial magnetic materials, including multilayered and complex-shaped geometries. The talk will give an overview of the new methods we have developed to fabricate [2,3] and characterize [4,5] these nanomaterials, and some of the new functionalities obtained. This includes the creation of localized spin textures, topological defects and stray fields, exploiting a combination of geometrical effects and inter- element interactions [6, 7], the automotive 3D motion of domain walls [8], the unconventional angular dependence of magnetotransport effects in 3D circuits [9], and the generation of chiral spin interactions across interlayers via interfacial effects in synthetic antiferromagnetic multilayers [10]. Acknowledgements I would like to thank all my group members and collaborators contributing to the work I will be presenting. This work is supported by the European Community under the Horizon 2020 Program, Contract No. 101001290 (3DNANOMAG). References [1] A. Fernández-Pacheco et al, Nature Comm. 8, 1 (2017). [2] L. Skoric et al, Nano Letters 20, 184 (2020). [3] D. Sanz-Hernández et al, Nanomaterials 8, 483 (2018). [4] D. Sanz-Hernández et al, ACS Nano 11, 11066 (2017). [5] M.A. Cascales-Sandoval et al, arXiv:2212.02975 [6] D. Sanz-Hernández et al, ACS Nano 14, 8084 (2020). Host: Termin: Ort: 1/2 [7] C. Donnelly et al, Nature Nanotechnol. 17, 136 (2022). [8] L. Skoric et al, ACS Nano 16, 8860 (2022). [9] F. Meng et al, ACS Nano 15, 6765 (2021). [10] A. Fernández-Pacheco et al, Nature Mater. 18, 679 (2019).