Skip the crowded vistas at Griffith Park and opt for something a bit more secluded in Altadena. The hike up to Echo Mountain is a moderate, 5.8-mile round-trip climb with a 1,503-foot elevation gain. It's a brilliant trek at night because once you get on the actual trail, it's nearly impossible to get lost. The trail is composed of a series of switchbacks, illuminated by the city lights below. At the top you can sit on the steps of the ruined old Echo Mountain Resort and quietly watch the valley twinkle (with a faint silhouette of downtown Los Angeles off in the distance). Some folks have been known to bring up a bottle of wine. Just be careful on the dark hike back down.
East Loma Alta Drive at North Lake Avenue, Altadena.