Sir Norman Foster has an extensive portfolio of remarkable architectural works. While opinions on the "best" may vary, here are three of his most renowned and influential projects

1. The Gherkin (30 St Mary Axe) - London, UK: 

This iconic skyscraper is one of the most recognizable landmarks in London. Its distinctive, energy-efficient design and curved glass facade have set new standards for modern office buildings.

2. Millennium Bridge - London, UK:

 Also known as the "Wobbly Bridge," this pedestrian suspension bridge spanning the river Thames is a feat of engineering and design. It provides stunning views of the city and connects St. Paul's Cathedral with the Tate Modern.

3. The Hearst Tower - New York City, USA:

 This innovative skyscraper combines a historic Art Deco facade with a modern glass tower. It's celebrated for its sustainable features and marked Foster's commitment to environmentally responsible architecture.

These three projects showcase Foster's architectural prowess, blending modernity with functionality and sustainability.