Spain is known for its culturally diverse heritage, having been influenced by many nations and peoples throughout its history. Spanish culture has its origins in the Iberian, Celtiberian, Latin, Visigothic, Roman Catholic, and Islamic cultures. The definition of a national Spanish culture has been characterized by tension between the centralized state, dominated in recent centuries by Castile, and numerous regions and minority peoples. In addition, the history of the nation and its Mediterranean and Atlantic environment have played strong roles in shaping its culture. After Italy, Spain has the second highest number of UNESCO World Heritage Sites in the world, with a total of 40.
