#9 – Xanadu 2.0, Seattle, Washington
Belonging to the co-founder and chairman of Microsoft, Bill Gates, Xanadu 2.0 is an estate widely known to public around the world. Built on 66,000 square feet, Gates’ mansion represents an earth-sheltered house designed in Pacific lodge style estimated at $120.5 million since 2012. Featuring some classical elements such as a vast private library and large dining room combined with innovative technology like a swimming pool with underwater music system or interactive control system that allows guests to remotely control in-house environment, Xanadu 2.0 displays the unique combination of original architecture and modern technology.