The architecture of the churches has evolved over time. For instance, the basic construction feature of a church is that it is designed as a cross; it is usually shaped as a long and a central rectangle along with rectangles on the sides, one in front that represents the altar space which is also called the sanctuary point. Churches are characterized by a dome along with a vaulted space created in the center which draws attention skywards or towards the heavens. Often churches also represent a circular form which is representative of eternity or the shape of an octagon that is a star shape, representing how a church brings the light of faith and enlightenment to the world. Another characteristic feature is a tall tower or spire that is created on the west end of a church that represents the crossing.
There are several instances of how church architecture has evolved over the ages. For instance, the Norwich Cathedral that was built in the Middle Ages in England is one of the earliest instances of Cathedral architecture. The origin of church buildings and their architecture forms can also be traced back to the Roman civilization. When Roman Empire embraced Christianity as a religion, Pope was given the most important position in the church as well as ceremonial rights. At such a time the architecture of the churches, especially of cathedrals rose to prominence.
Certain old and disused churches have been converted to from universities, schools, even venues for theatres, cinemas, and other public buildings in the modern era. On the other hand, the trend to convert old buildings and use them as places of worship is not unusual. Hence, there are certain unusual venues that have converted to churches such as a former garage used for buses, an old tram station, cinema, even a windmill – these are some unusual venues used as churches in the UK. In the modern era private real estate companies along with the church, management enters partnerships to manage and redevelop church properties. Some of these efforts are towards reviving and preserving old age church architecture.