Alana Goldstein/99% Invisible
A tour group walks some of LA's secret staircases.
Tucked into the hillsides of San Francisco and Los Angeles are lots and lots of hidden public staircases. They help pedestrians get from point A to point B a lot faster, and they also make for a great workout. But how did this idea get started?
Roman Mars and Sam Greenspan of the podcast 99 Percent Invisible have the story.