According to Catholic tradition it was founded in the first century by Saints Peter and Paul and, by virtue of Petrine and papal primacy, is the focal point of full communion for Catholic Christians around the world. As a sovereign entity, the Holy See is headquartered in, operates from, and exercises "exclusive dominion" over the independent Vatican City State enclave in Rome, of which the pope is sovereign. It is organized into polities of the Latin Church and the 23 Eastern Catholic Churches, and their dioceses and religious institutes.