Photos: When L.A.'s Most Popular Streets Were Dirt Roads

Like some of the very people who drive on them, a few Los Angeles streets have achieved the height of fame. Sunset Boulevard lent its evocative name to Billy Wilder's classic film noir. Pasadena's Colorado Boulevard appears on millions of television screens each New Year's Day as the route of the Rose Parade. And to many around the world, Pacific Coast Highway instantly conjures up images of surfers, convertibles, and movie stars. (In L.A., we're more likely to think of traffic, wildfires, and landslides.)

But fame belies the humble origins of these celebrity streets. Horses once casually left droppings where shoppers stroll today along Santa Monica's Third Street Promenade. A dusty wagon road alongside the Ostrich Farm Railroad eventually became Sunset Boulevard. A century ago, Los Angeles was a much emptier place, and what today are major thoroughfares were then dusty cow paths through open countryside or pockmarked roads rutted by wagon wheels.

Keep reading the full story at KCET.org.