Larry Ellison, Oracle's cofounder and former CEO, has an extensive real estate portfolio.

His holdings include multiple homes in Silicon Valley and Lake Tahoe, as well as 98% of the Hawaiian island of Lanai.

Here are all the real estate holdings belonging to Ellison, the seventh-richest person in the world.

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Dubbed the "nation's most avid trophy-home buyer" by the Wall Street Journal, Oracle cofounder Larry Ellison is no stranger to the real estate market.

Ellison is the tenth-richest person in the world, with a net worth of more than $60 billion, according to Forbes. When asked in 2012 why he would buy more homes than he could possibly live in, Ellison referenced his love of art.

"I'm going to start these art museums that are basically converted homes," Ellison told CNBC in 2012. "I have one for modern art, and I have one for 19th-century European art, and one for French impressionism."

Although his 2012 purchase of the Hawaiian island of Lanai has been his largest overall investment by far, he's made a number of blockbuster purchases over the last two decades in Silicon Valley, Lake Tahoe, and even Japan.

Here are all the houses and properties belonging to the cofounder of Oracle: