The skyscraper style first advocated by Louis Sullivan - a tower of strongly vertical character with clear definitions among base, shaft, and crown - has remained remarkably consistent throughout the history of this building type.

There can be little question that the tall building presents one of the most difficult challenges to the architect.

One of the stated goals of the postmodern movement in architecture was a greater sensitivity to the people who live in or use newly designed buildings.

When Oscar Niemeyer died on December 5, 2012, ten days before his 105th birthday, he was universally regarded as the very last of the twentieth century's major architectural masters, an astonishing survivor whose most famous accomplishment, Brasilia, was the climactic episode of utopian High Modern urbanism.

Before the professionalization of architecture in the nineteenth century, it was standard for an aspiring mason or carpenter to begin his apprenticeship at fourteen and to become a master builder by his early twenties.

Experimental architecture by its very nature is more prone to the depredations of time and natural elements than buildings made from conventional materials through traditional methods. Avant-garde architects often simply do not know how the products of their imagination will perform when implemented, especially if untested components are involved.

The truth be told, the World Trade Center was neither a very good work of architecture nor a very successful piece of urbanism. Its shortcomings were somewhat mitigated by the westward and southward expansion of the World Financial Center and Battery Park City during the 1980s.