The multilevel Julich Brain Atlas developed by researchers in the Human Brain Project, could help in studying psychiatric and aging disorders by correlating brain networks with their underlying anatomical structure. By mapping microarchitecture with unprecedented levels of detail, the atlas allows for better understanding of brain connectivity and function. Researchers of the HBP have provided an overview of the Julich Brain Atlas in the journal Biological Psychiatry. The paper focuses on the cytoarchitecture and receptor architecture of the human brain, and how to apply the atlas in the field of psychiatric research.