Brief synthesisThe Historic Centre of Oporto, Luiz I Bridge and Monastery of Serra do Pilar, built along the hills overlooking the mouth of the Douro River in northern Portugal, is an outstanding urban landscape with a 2,000-year history. The active social and institutional tissue of the town ensures its survival as a living historic centre. AuthenticityThe authenticity of the urban fabric of the Historic Centre of Oporto, Luiz I Bridge and Monastery of Serra do Pilar is absolute in terms of its location and setting, forms and designs, and materials and substances. Protection and management requirementsThe entire Historic Centre of Oporto is classified as a National Monument under Law No. The World Heritage Management Plan for the Historic Centre of Oporto includes a survey of the state of conservation, an action plan, a monitoring programme, and a communication plan.