7 by 7

When I briefly lived in San Francisco a few years back, I used a city map to find my way around. The map showed the main part of the city, much of which is bordered by water, to be roughly seven miles by seven miles. I'd been nervous about finding my way alone, but now, this news changed my experience of city life. Having been an enthusiastic hiker for many years, seven miles was not impossible! San Francisco was not so much an unfamiliar city, now, as a kind of National Park in my mind. No matter where I got stranded there, I could always find a trail, hike back home enjoying the scenery along the way.