Glazed architectural terra-cotta is a ceramic

Ceramic

A ceramic is an inorganic, nonmetallic solid prepared by the action of heat and subsequent cooling. Ceramic materials may have a crystalline or partly crystalline structure, or may be amorphous...

 masonry

Masonry

Masonry is the building of structures from individual units laid in and bound together by mortar; the term masonry can also refer to the units themselves. The common materials of masonry construction are brick, stone, marble, granite, travertine, limestone; concrete block, glass block, stucco, and...

 building material

Building material

Building material is any material which is used for a construction purpose. Many naturally occurring substances, such as clay, sand, wood and rocks, even twigs and leaves have been used to construct buildings. Apart from naturally occurring materials, many man-made products are in use, some more...

 popular in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 from the late 19th century until the 1930s, and still one of the most common building materials found in U.S. urban environments. It is the glazed

Ceramic glaze

Glaze is a layer or coating of a vitreous substance which has been fired to fuse to a ceramic object to color, decorate, strengthen or waterproof it.-Use:...

 version of architectural terra-cotta

Architectural terracotta

Terracotta, in its unglazed form, became fashionable as an architectural ceramic construction material in England in the 1860s, and in the United States in the 1870s. It was generally used to supplement brick and tiles of similar colour in late Victorian buildings.It had been used before this in...

; the material in both its glazed and unglazed versions is sturdy and relatively inexpensive, and can be molded into richly ornamented detail. Glazed terra-cotta played a significant role in architectural style

Architectural style

Architectural styles classify architecture in terms of the use of form, techniques, materials, time period, region and other stylistic influences. It overlaps with, and emerges from the study of the evolution and history of architecture...

s such as the Chicago School

Chicago school (architecture)

Chicago's architecture is famous throughout the world and one style is referred to as the Chicago School. The style is also known as Commercial style. In the history of architecture, the Chicago School was a school of architects active in Chicago at the turn of the 20th century...

 and Beaux-Arts architecture.
The material, also known in Great Britain as faience and sometimes referred to as "architectural ceramics", was closely associated with the work of Cass Gilbert

Cass Gilbert

- Historical impact :Gilbert is considered a skyscraper pioneer; when designing the Woolworth Building he moved into unproven ground — though he certainly was aware of the ground-breaking work done by Chicago architects on skyscrapers and once discussed merging firms with the legendary Daniel...

, Louis Sullivan

Louis Sullivan

Louis Henri Sullivan was an American architect, and has been called the "father of skyscrapers" and "father of modernism" He is considered by many as the creator of the modern skyscraper, was an influential architect and critic of the Chicago School, was a mentor to Frank Lloyd Wright, and an...

, and Daniel H.