The renowned architect known for their contributions to sustainable urban design is Norman Foster. His firm, Foster + Partners, is celebrated for innovative projects that prioritize environmental sustainability and energy efficiency. Notable works include the 30 St Mary Axe (the Gherkin) in London and the Reichstag building renovation in Berlin. Foster's designs often integrate nature into urban spaces, promoting public engagement and sustainable practices. His philosophy emphasizes the role of design in enhancing urban living and addressing global environmental challenges, making him a transformative figure in architecture.