25 Year Award

Twenty-five Year Award
2017 award recipient, the Louvre
Awarded for	Long-term excellence in American architecture
Country	United States of America
Presented by	American Institute of Architects
First awarded	1969
Website	Official homepage

The Twenty-five Year Award is an architecture prize awarded by the American Institute of Architects (AIA) to buildings and structures that have "stood the test of time for 25 to 35 years", and that "[exemplify] design of enduring significance". The Twenty-five Year Award was first presented in 1969, and has been handed out every year from 1971 onward. In 2017, the prize was awarded to the Louvre in Paris, for the project titled Grand Louvre – Phase I by Pei Cobb Freed & Partners.

The project receiving the award can be located anywhere in the world, but must be designed by an architect licensed in the United States. Only four buildings outside of the United States have received the award, one each in Jeddah, Saudi Arabia, Barcelona, Spain, London, England, and Paris, France. New York City has the most awards at five, while Boston, Chicago, New Haven, and Washington, D.C. are all tied in second with two awards each.

Buildings to which Finnish American architect Eero Saarinen has contributed have received six awards, tied with the architectural firm of Skidmore, Owings & Merrill. Louis I. Kahn has been honored five times. Buildings by Frank Lloyd Wright have received this award four times, and both Ludwig Mies van der Rohe as well as the firm Pei Cobb Freed & Partners have each had three of their buildings honored. Of the 48 projects that have received this award, only two, Eames House and the Vietnam Veterans Memorial, had women as contributing architects.