About The Octagon Museum

Photograph by Robert C. Lautman.

The oldest museum in the United States devoted to architecture and design, the Octagon Museum enables the American Architectural Foundation to increase public awareness of the power of architecture and its influence on the quality of our lives. This building was designed by Dr. William Thornton for Col. John Tayloe III, and was constructed between 1799 and 1801. 

Learn more about The Octagon Museum and about this historic building.


The Initiated Eye: Secrets, Symbols, Freemasonry and the Architecture of Washington, DC

Centerpiece of the New Republic

Centerpiece of the New Republic, 36” x 36”

Artist: Peter Waddell
© 2005 Grand Lodge of the District of Columbia

The Octagon, in partnership with the Grand Lodge of Free and Accepted Masons of Washington, DC will be circulating the exhibition The Initiated Eye: Secrets, Symbols, Freemasonry and the Architecture of Washington, DC with Paintings by Peter Waddell. The exhibition began its national tour at the George Washington Masonic Memorial in Alexandria, VA and will continue to museums and sites nationwide through 2009.

Through extensive research and in collaboration with an advisory committee, artist Peter Waddell has created 21 extraordinary oil paintings based on the architecture of our nation’s capital and the role that our founding fathers and prominent citizens many of whom were Freemasons, played in establishing the layout, design and construction of the city. Through the paintings, the exhibition portrays an unprecedented view into the world of Freemasonry, and through historical events, activities, ceremonies, and special gatherings carefully explains and demystifies Freemasonry for the public. The paintings often depict objects associated with Freemasonry that were carefully selected from local lodges to provide a context and richness to illustrate the many historical collections related to our nation’s heritage held in trust by the Freemasons. The Initiated Eye Photo Gallery


Structures of our Time: 31 Buildings That Changed Modern Life

Smith House, Darien, Connecticut. Richard Meier & Partners, 2000 Award Recipient. Photographs by Carol M. Highsmith.

The Octagon is pleased to announce the latest addition to its national traveling exhibition program. Since 1969, The American Institute of Architects has celebrated the enduring power of architecture and good design through its annual 25-Year Award, honoring structures that are 25 to 35 years old and widely recognized to be of special significance and broad influence. To celebrate over three decades of this important award, the Octagon, the museum of the American Architectural Foundation is circulating a reproduction panel exhibition that not only honors these great American buildings and their designers but also explores the ability of architecture to affect the world around it. Structures of Our Time Photo Gallery

The Octagon is in the final phase of a Save America’s Treasures grant involving extensive exterior restoration including replacement of the main roof, restoration of the unique coal vault and related archaeological testing, stone repair, and portico roof restoration. Tours of The Octagon have been temporarily suspended due to the nature of this work and related construction on the site. Watch for updates about the restoration as it progresses.

Top: Peter Waddell, Building the Octagon, oil on canvas, 1996.


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1799 New York Avenue NW · Washington DC 20006 · 202.638.3221 · Fax 202.626.7420 · info@theoctagon.org