Larry Ellison | Hawaiian Island | $500 Million

He is undeniably one of the wealthiest entrepreneurs in the world. He even owns a ton of properties all over Silicon Valley and even outside the country. He holds several beaches and gardens in Japan, which is undoubtedly a fitting place for the mogul since he dabbles in technology.

Speaking of investments outside the country, he also owns most of Lanai to turn it into a utopia. He owns about 87 thousand acres of land, which is a lot for one man. He aspires to expand even more outside of tourism and completely go green – for better sustainability. Relatively he started a wellness company, Sensei, geared towards helping people have a healthier lifestyle preventing sudden mortality. The company also seeks to capitalize on the island’s agriculture and further its studies on a greener Earth.