One of the unique things about San Diego is that it is a city, and a county that is honeycombed with a number of canyons. While these canyons can present a number of practical challenges – in that roads end and re-start and different locations, they provide great spots to explore in certain cases, and great areas for wildlife to travel to and from various habitats. And, in the case of the Spruce Street Suspension bridge, a great man-made object to walk, run, or saunter across on either an urban hike, or a quick visit to see some of San Diego’s hidden history.