In 2013, the University of Coimbra in Portugal was added to the UNESCO World Heritage List. Its nomination was based on three criteria: an important exchange of human values, an outstanding example of a type of construction and architectural ensemble, and outstanding universal significance. Although it alternated between Lisbon and Coimbra from 1290 to 1537, Coimbra is recognized as the oldest university in Portugal and one of the 15 universities founded in Europe in the thirteenth century. The oldest nucleus is located in the University Courtyard and corresponds to the Royal Palace of Coimbra. However, a group of 31 main buildings, divided into four main architectural and historical nuclei, was nominated. Stone has been the primary material used in construction over the centuries. University Courtyard contains the oldest buildings, which have archaeological remains dating back to the Roman and Muslim periods. These buildings were constructed using a yellowish dolostone that corresponds to the Coimbra Formation, which is locally available. Modifications made in the 17th and 18th centuries used Ançã limestone, a very white and soft limestone primarily used for sculptural and decorative elements of buildings. Managing built heritage requires careful consideration of conservation and restoration principles. Several buildings, including the Botanical Garden, Chemistry Laboratory, Science Museum, Iron Gate (Porta Férrea), St Michel’s Chapel, and University Tower, have already undergone restoration. The Joanina Library and University Palace are currently being rehabilitated.