Port City heritage buildings are one of the main elements in the port city identity. It is necessary to protect them because they tell stories from the past and show the influence of the port in the urban landscape. The port of Tarragona for example, is refurbishing its emblematic clock tower from the early 20th century and its former HQ for new uses. Another Spanish port, Valencia is investing to protect the clock building from swallows, while allowing them to nest. Another approach can be found in Strasbourg, in France, where port has become a showcase for street art from artists like Apaiz.