There are many unique and beautiful pieces of art in the world. They span from the time of ancient man to the present day. These pieces come in various shapes, forms and media. Some of these are paintings, others are sculptures. There are works of art made of glass, ceramic and wood. Historic buildings are also considered to be a part of the art world; some for their history and others for their beauty. All of these objects may be in need of restoration at one time or another. The art world has worked hard to develop the sciences necessary to restore these pieces to the original intent of those who created them.