What is a unique feature of Niemeyer's architectural style as seen in the National Congress?

Niemeyer's architectural style is renowned for its free-flowing curves, which often defy conventional rectilinear design principles. In the context of the National Congress of Brazil, these curves contribute to a dynamic and organic aesthetic that is emblematic of his work. Instead of using sharp angles or rigid geometric forms, Niemeyer embraced a more fluid approach, allowing structures to seamlessly integrate with their surroundings and reflect a sense of movement. This characteristic not only defines his architectural identity but also sets apart his buildings as unique expressions of modernist design that celebrate the beauty of natural shapes.

The absence of traditional elements further illustrates Niemeyer's vision, as he sought to break away from architectural conventions of the past. Overall, the emphasis on free-flowing curves in the National Congress exemplifies why this aspect of his style is considered particularly distinctive.