This symposium firmly covers the impacts of human rights law on penal, prison, (police) custodial, immigration, and psychiatric policies in diverse jurisdictions, including Russia, Australia, Japan, Israel, the United States, and Europe, that have been understudied and neglected in comparison with the United States and Europe. It also raises socio-legal debates about accountability, operational complexities, transparency, the ability to either limit or increase the state’s right to punish, the efficacy of oversight bodies, the limits of human rights “law” in this context, access to justice and legal aid for detainees and prisoners, and the persistence of violations in the face of reform. In particular, this symposium offers an opportunity to analyze the way in which the United Nations, the European Court of Human Rights, national courts, the monitoring bodies, and detainees are able to challenge penal and detention policies as well as to soften them through the lens of human rights. This symposium intends therefore to demonstrate an engagement with existing scholarship in human rights, penal, detention, immigration and prison policies, and punishment. It relies on theoretical and empirical socio-legal work that addresses these issues from a local, national, and global perspective. It also challenges traditional socio-legal boundaries by taking into account and integrating the intersection of policy and subdiscipline spheres that cover criminal and penal justice, immigration, psychiatric institutions, and human rights. In this way, this symposium combines the study of these socio-legal fields and all places of detention in very contrasting jurisdictions with a view to analyzing the nature of relations between human rights and detention.