A n architectural style is characterized by the features that make a building or other structure notable or historically identifiable. It is a sub-class of style in the visual arts generally, and most styles in architecture related closely to the wider contemporary artistic style. A style may include such elements as form, method of construction, building materials, and regional character. Most architecture can be classified within a chronology of styles which changes over time reflecting changing fashions, beliefs and religions, or the emergence of new ideas, technology, or materials which make new styles possible.