Unbuilt America: Forgotten Architecture in the United States from Thomas Jefferson to the space age is a 1976 book by Alison Sky and Michelle Stone. The book describes and shows plans of buildings and monuments, that were planned but never built, throughout the first two centuries of the history of the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Projects featured in book include rejects entries for building competitions like the New York Crystal Palace

New York Crystal Palace

New York Crystal Palace was an exhibition building constructed for the Exhibition of the Industry of All Nations in New York City in 1853, which was under the presidency of Mayor Jacob Aaron Westervelt...

 and the Chicago Tribune Tower and unrealized projects by architects like Frank Lloyd Wright

Frank Lloyd Wright

Frank Lloyd Wright was an American architect, interior designer, writer and educator, who designed more than 1,000 structures and completed 500 works. Wright believed in designing structures which were in harmony with humanity and its environment, a philosophy he called organic architecture...

 and Siah Armajani

Siah Armajani

Siah Armajani is an Iranian-born American sculptor.Siah Armajani designed the Olympic Torch presiding over the 1996 Summer Olympics in Atlanta, Georgia, United States...

.

It was reviewed in New York Affairs by Cora Angier Sowa; a 2007 exhibition at Georgia Tech called Unbuilt Atlanta cited the book as its inspiration.