5. United States: Apple Park, California, $5 billion
A large ring-shaped main structure, seven cafés, 9,000 trees, the 1,000-seat Steve Jobs Auditorium, and a 100,000 square foot fitness facility are all aspects of this building complex, which is located in Cupertino, California. More than 12,000 workers are housed at Apple Park, which is reported to have cost $5 billion to develop.
The circular main structure, created by famous architect Norman Foster, is constructed of glass and steel. There is a public tourist center available.