Gov. Jerry Brown ordered the conversion of 50 million square feet of lawn, roughly 1.8 square miles, to drought-tolerant landscaping as part of a water conservation plan. Local water officials estimate the move will save more than 2 billion gallons of water per year.

Story: Brown orders California's first mandatory water restrictions

For comparison, here is what 50 million square feet looks like compared to California landmarks

Disneyland

Los Angeles International Airport

Dodger Stadium and Elysian Park

Half Dome, Yosemite National Park

Presidio, San Francisco

San Diego Zoo and Balboa Park

UCLA

Sources: Metropolitan Water District of Southern California, Google Earth