Oscar Niemeyer was a renowned 20th century Brazilian architect known for his pioneering modernist designs and sculptural concrete structures. Some of his most famous works include the United Nations building in New York, the planned city of Brasilia including the Cathedral and National Congress buildings, and the Pampulha complex in Brazil. Niemeyer was influential in developing abstract forms in architecture and was inspired by the curves found in nature. He had a long and prolific career spanning over 70 years in which he designed over 600 projects across Brazil and internationally.