Poised on the precipice of dreams, you're lulled by the mournful bellow of the foghorn. In the distance, sea lions on Pier 39 bark in harmony. "Sleep tight," they seem to say, "you'll need all the shut-eye you can get."

For tomorrow you'll wake up in San Francisco. And when the morning sun lifts the city's legendary curtain of fog, the stage is set for one heck of an amazing day.

Armed with a camera and a formidable pair of walking shoes, your first order of business is Lombard Street.