Church features are important components of a church building. A SPIRE is a tall, pointed structure that is often found at the top of a church and is used to draw attention to the building. An ALTAR is a raised platform or table where religious ceremonies are performed. A STEEPLE is a tall tower with a pointed roof that is usually found at the entrance of a church. An APSE is a semicircular recess in the wall of a church, often containing an ALTAR. An AISLE is a long, narrow passage between rows of seats in a church. An ICON is a religious image or symbol, often found in churches. The NAVE is the main body of a church, where the congregation sits. A rose window is a large circular window with curved stone tracery, often found in churches. Stained glass is a type of glass that has been coloured and patterned to create decorative designs, often found in churches.