Because many cathedrals took centuries to build and decorate, they constitute a major artistic investment for the city in which they stand. Not only may the building itself be architecturally significant, but the church often houses treasures such as stained glass, stone and wood statues, historic tombs, richly carved furniture and objects of both artistic and religious significance such as reliquaries. Moreover, the cathedral often plays a major role in telling the story of the town, through its plaques, inscriptions, tombs, stained glass and paintings.