in which i realize that los angeles is big

Sometimes I really cannot believe how gigantic Los Angeles is. I had assumed that Sylmar, where the juvenile hall I visit is located, was its own city. Why might I assume this? Oh, only because it's 22 miles north of me. I realized that it was, in fact, just a NEIGHBORHOOD of Los Angeles when I saw that they have a Los Angeles Public Library branch, the city library. It makes me feel slightly better to find out (via Wikipedia) that it is Los Angeles's northernmost neighborhood. But still! 22 miles north! And I only live in the middle of the western side of Los Angeles!