A comprehensive global survey of more than 300 extraordinary unbuilt architecture projects from the 20th century to the present day

Iconic architecture that shapes the American skylines.

The development and expansion of cities in the United States over the last 150 years gave rise to one of the most ambitious and fastest growing building projects the world had ever seen. The landscape of cities such as New York, Los Angeles, Chicago, and others, transformed immeasurably as a consequence of decades of construction, and some of the most iconic architecture in the world sits in the foundations of the US and its cities.

Ameri...