Strictly speaking, a cathedral is simply a church where a bishop has his chair. In reality, however, the cathedral plays many roles. These great buildings were, and still are, symbols of the power of the religions that built them. The cathedral is the stone incarnation of a church's religious and social role in the lives of its congregation. When construction is completed, the beautiful artwork, architecture and other details of the classic cathedral both glorify God and boost the status of the patron church that paid for the work. Visiting a cathedral is an excellent way to escape the noise and bustle of a city and take shelter in the peace and splendor of the divine. And best of all, admission to most cathedrals is free!