The Reservoir divides Central Park in two. The larger and more familiar southern park holds most of the attractions (and people), but the northern park (above 86th St) is worth a visit for its wilder natural setting and its dramatically different ambience.

As for safety , you should be fine during the day, though always be alert to your surroundings and try to avoid being alone in an isolated part of the park. After dark, it's safer than it used to be but still not advisable to walk around. The exception to this rule is in the case of a public evening event such as a concert or Shakespeare in the Park; just make sure you leave when the crowds do.