In recent decades, the liability of public authorities has been one of the main areas of development in tort law in Europe, with major reforms implemented or considered at a national level and a steady stream of major court decisions. During the same period, 'Member State liability' has also been recognized in the law of the EU, and the interplay of principles of national and EU law - and additionally, the 'just satisfaction' jurisprudence of the European Court of Human Rights-warrants close attention. In this context, the present study contributes to the understanding of the law of extra-contractual liability as it applies to public authorities in the legal systems of Europe (and selected non-European jurisdictions), to facilitate its enhancement where necessary or desirable, and to consider the possibilities for harmonization in the area-specifically, through the extension and adaptation of the Principles of European Tort Law to cover public authority liability. (Series: Principles of European Tort Law, Vol. 1) [Subject: European Law, Comparative Law, Tort Law]