Albany Public Library

Albany Public Library, by Charles Burggraf, at Albany, Oregon, 1914. 
Photo by David Owen. © David Owen, available from Artifice Images

Source: www.greatbuildings.com

Air Force Academy Chapel

Air Force Academy Chapel, by Walter Netsch/ SOM, at Colorado Springs, Colorado, 1956 to 1962. 
Photo by Johnson Architectural Images. © Artifice, Inc., available exclusively through Artifice Images

Source: www.greatbuildings.com

The Adziogol Lighthouse

The Adziogol Lighthouse by Vladimir Schuchov. Photography by Matt Bridgestock.

Source: www.greatbuildings.com

Academic Bookshop

Academic Bookshop, by Alvar Aalto, at Helsinki, Finland, 1962 to 1969. 
Photo by Donald Corner and Jenny Young, PCD.2350.1012.1143.49. © Donald Corner and Jenny Young, available from Artifice Images

Source: www.greatbuildings.com

Aalto Studio

Aalto Studio, by Alvar Aalto, at Munkkiniemi, Helsinki, Finland, 1954 to 1956. 
Photo by Claudio Divizia. © Claudio Divizia, available from Artifice Images

Source: www.greatbuildings.com

Aachen Cathedral

Aachen Cathedral, by unknown, at Aachen, Germany , 792 to 805. 
© Available through Artifice Images

Aachen Cathedral Commentary 

"Construction of this Palatine chapel, with its octogonal basilica and cupola, began between 790 and 800 under the Emperor Charlemagne. Originally inspired by eastern churches of the Roman Empire, splendid facings were added in the Middle Ages. "

— UNESCO

Source: www.greatbuildings.com

A. I. A. Headquarters

A. I. A. Headquarters, by TAC, at Washington, D.C., 1973. 
Photo by Ernest and Kathleen Meredith. © Ernest and Kathleen Meredith

Sources on A. I. A. Headquarters

Roger H. Clark and Michael Pause. Precedents in Architecture. New York: Van Nostrand Reinhold, 1985. mediation diagram, p209. — Updated edition available at Amazon.com

Source: www.greatbuildings.com