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UNESCO World Heritage Site

Naples' 2,800-year history has left it with a wealth of historical buildings and monuments, from medieval castles to classical ruins, and a wide range of culturally and historically significant sites nearby, including the Palace of Caserta and the Roman ruins of Pompeii and Herculaneum. In 2017 the BBC defined Naples as "the Italian city with too much history to handle".

The most prominent forms of architecture visible in present-day Naples are the Medieval, Renaissance and Baroque styles. Naples has a total of 448 historical churches (1000 in total), making it one of the most Catholic cities in the world in terms of the number of places of worship. In 1995, the historic centre of Naples was listed by UNESCO as a World Heritage Site, a United Nations programme which aims to catalogue and conserve sites of outstanding cultural or natural importance to the common heritage of mankind.

Naples is one of the most ancient cities in Europe, whose contemporary urban fabric preserves the elements of its long and eventful history. The rectangular grid layout of the ancient Greek foundation of Neapolis is still discernible. It has indeed continued to provide the layout for the present-day Historic Centre of Naples, one of the major Mediterranean port cities. From the Middle Ages to the 18th century, Naples was a focal point in terms of art and architecture, expressed in its ancient forts, the royal ensembles such as the Royal Palace of 1600, and the palaces and churches sponsored by the noble families.