A church building, often simply called a church, is a building used for religious activities particularly worship services. The term in its architectural sense is most often used by Christians to refer to their religious buildings but can be used by other religions. In traditional Christian architecture, the church is often arranged in the shape of a cross. When viewed from plan view the longest part of a cross is represented by the aisle and the junction of the cross is located at the altar area. Towers or domes are often added with the intention of directing the eye of the viewer towards the heavens and inspiring church visitors. Modern church buildings have a variety of architectural styles and layouts; many buildings that were designed for other purposes have now been converted for church use; and, similarly, many original church buildings have been put to other uses.