The right to the city is a solution that can be considered in terms of third-generation human rights. The right to the city also serves as a tool for the effective fulfilment and respect of human rights agreed at the international level as well as the Sustainable Development Goals expressed in the 2030 Agenda. This is undoubtedly a new paradigm for urban development, which provides an alternative framework for rethinking cities and urbanisation. It aims to address the main challenges in cities and human settlements. The purpose of the article is to present an understanding of the right to the city by the analysis of its structure and the answer to the question of whether it is in fact a third-generation human right.

The article deals with the issue concerning the place of the of sustainbale development
in the Polish Constitution. It will present the problem of sustainable development legal nature and its consequences. Obligations of public authorities regarding the implementation of sustainable development included in Article 5 of the Constitution, will also be considered with the background of the provisions contained in art. 74 section 1, 68 and 86 of the Constitution. The article will also contain references to contemporary understanding of sustainable development, which results from the acts of international law, including the Rio+20 Declaration and Agenda 2030. The aim of the above analysis is to indicate what shape it should be given today and how currently sustainable development should be understood. That should be the same an indication for public authorities what actions should be taken in order to respond the current understanding of sustainable development.