They own the soil where the potatoes in McDonald's french fries grow, the carrots from the world's largest producer and the onions that Americans sauté every night for dinner. But they're far better known for their work in tech and in trying to save the climate.

Bill and Melinda Gates, who recently announced they're getting divorced and are dividing their assets, are deeply invested in American agriculture. The billionaire couple, in less than a decade, have accumulated more than 269,000 acres of farmland across 18 states, more than the entire acreage of New York City. The farmland was purchased through a constellation of companies that all link back to the couple's investment group, Cascade Investments, based in Kirkland, Washington.

The 100 Circles Farm is in Washington state, just north of the Columbia River.Google Maps