My mom made this.

Day and night shots from the same location in Los Angeles.

One set looks towards Century City. On the right, you can see an oil well next to a high school campus, and in the detail shot, the well is marked in green.

The other set is the Hollywood Hills.

Last year, my friends and I went out to the went to the desert for a party and took these photos of each other at night with timed-exposure and a flashlight.