• City Hall Sites and the Common
• The Architecture of City Hall
• The Art Collection
• Government
• Chronology of City Hall
• Glossary of Terms
• Bibliography

Source:  Fleming, Honour, and Pevsner. The Penguin Dictionary of Architecture And Landscape Architecture. Fifth edition, 1999 (paperback).

Banded rustication - large stone blocks separated from each other by deep
                                  horizontal joints.

Coffer - an ornamental, sunken panel on a ceiling.

Cupola - a small dome on a base crowning a roof.

Dome - a curved vault (arched surface) on a circular base.

Façade - the front or face of a building.

Festoon - carved ornament of a garland of flowers and fruit tied with ribbons and
                suspended from two points.

Oculus - a circular window or opening.

Pavilion - an ornamental building, often in a garden.

Pier - the solid mass between windows, doors, and other openings; a rectangular
         support.

Pilaster - a rectangular support slightly projecting from a wall.

Portico - an open, roofed space forming an entrance.

Rotunda - a circular room that is usually domed.

The Ionic order is used on the first-floor level of City Hall and consists of pilasters or columns set on bases, and topped with capitals decorated with volutes and rosettes.  On the second-floor level, the more ornate Corinthian order is used, characterized by its many acanthus leaves.

View Full image Ionic order column, exterior, City Hall, New York Photograph by Glenn Castellano.	View Full image Corinthian order pilaster, exterior detail, City Hall, New York Photograph by Glenn Castellano.