Brasília Metropolitan Cathedral (Brazil capital) – Oscar Niemeyer (1959)

The Metropolitan Cathedral of Brasília is a modernist masterpiece designed by renowned Brazilian architect Oscar Niemeyer and inaugurated in 1970. The structure features 16 curved concrete columns, each weighing 90 tons, arranged in a circular layout that forms a striking crown-like shape. These hyperboloid columns rise to form a dynamic, open structure that floods the interior with natural light through its glass ceiling, designed by artist Marianne Peretti. The cathedral exemplifies Niemeyer's bold use of curves and his vision of integrating architecture with symbolism and spirituality. It remains one of Brasília's most iconic landmarks and a key work of 20th-century modernist architecture.