Colonnade the Pantheon in Rome or the stoae of Ancient Greece. When the intercolumniation is alternately wide and narrow, a colonnade may be termed araeosystyle (Gr. αραιος, "widely spaced", and συστυλος, "with columns set close together"), as in the case of the western porch of St Paul's Cathedral and the east front of the Louvre by Perrault. Colonnades have been built since ancient times and interpretations of the classical model have continued through to modern times, and Neoclassical styles remained popular for centuries. At the British Museum, for example, porticos are continued along the front as a colonnade. The porch of
Society of Architectural Historians of Architectural Historians". The name was shortened to its current form a decade later. SAH is currently the largest academic organization in the field of architectural history in the US. As part of its mission to "advance knowledge and understanding of the history of architecture, design, landscape, and urbanism worldwide", the Society publishes several works, most noticeably the "Buildings of the United States" series, as well as a newsletter and the "Journal of the Society of Architectural Historians" (). In addition, in association with the University of Virginia, the Society is developing an online encyclopedia of architecture called SAH Archipedia.