Answer:
They are the place of historical and cultural importance. They represent livelihood of people, tradition, culture, civilization, and originality. They symbolize the craftsmanship of our ancestors and how people used to make the art and architecture in early days.
Art needs an appropriate built environment within which it can be showcased to greatest effect, while architecture needs art to turn bricks, steel and concrete into a space in which people want to live, to learn, to shop and to work.