Last year marked the fiftieth anniversary of the inauguration of Brazil's capital Brasilia. Designed by architects L cio Costa and Oscar Niemeyer, it has since become one of the most famous and widely studied urban planning projects. Niemeyer's cathedral, Catedral Metropolitana Nossa Senhora Aparecida; his building for the national parliament, the Congresso Nacional; and the city's 707-foot television tower have become icons of twentieth-century...