Ellison Estate (United States) - Completed in 2004 - Height: N/A

Detail: Larry Ellison's Japanese-inspired estate in Woodside, California, boasts a Koi pond, tea house, and extensive gardens.

Interesting Fact: Ellison co-founded Oracle Corporation and is known for his affinity for Japanese culture. Larry Ellison, the co-founder of Oracle, reportedly spent over $200 million to acquire and develop this property.