AntoniGaudi (1852-1926) is Barcelona's most famous architect, responsible for tourist attractions such as the Sagrada Familia, and ParcGuell?. His work, which was both structurally and aesthetically daring for its time, is characterized by a heavy use of artisan work in tile and stone, volumetric organic forms, and colorful surfaces.
The art critic RobertHughes wrote a book about the city (titled Barcelona, simply enough - ISBN 0679743839 (US), ISBN 1860468241 (UK)), and had a few points about Gaudi's methods that might be of interest to people here:
Gaudi did not work heavily from abstract designs.
Part of what makes Gaudi's work so unique is that he does not rely heavily on right angles. This made him a bit of an oddball at architecture school, and it also meant that his plans were very difficult to characterize with two-dimensional blueprints. He thought instead in volumetric terms, preferring to work on-site and perhaps creating as he went along:
So he and his assistants often created highly complex string structures hung from the ceiling, and then as the final step, they would take photographs of the forms, and turn the photographs upside-down. There's a replica of this method in the basement museum at the Sagrada Familia; a structure made up of hundreds of string arches, hanging from a plate over a gigantic mirror.
Gaudi's work was geographically bound by its attention to craft.
He planned structures that relied heavily on the skills of local artisans, including those who worked in tile and stone. Modernists later dismissed his work as too unsuited for the international rhythms of 20th century architecture: In Hughes' words, they saw him as "a designer so dependent on a vanishing artisan base that he could have no practical message for the future."
http://www.op.net/~jmeltzer/Gaudi/mila.html
http://www.op.net/~jmeltzer/Gaudi/eltemple.html
You can see other works at http://www.op.net/~jmeltzer/Gaudi/works.html
A Gaudi design has been proposed for the WTC site nearly 77 years after his death: http://news.bbc.co.uk/1/hi/world/americas/2687565.stm
This proposal was ultimately not accepted but the BBC archive link is still interesting.