Photo Scavenger Hunt: Bright Light

Traffic lights help keep drivers on track as they travel along streets in Clayton and Richmond Heights.

Other lights in our fair cities allow people to work in office buildings long past nightfall, and still others give color to trees downtown.

The light pictured in this week's Photo Scavenger Hunt also serves a distinctive purpose. This week, we want you to tell us two things: What purpose does this light serve? And where is it located?

Once a week, Clayton-Richmond Heights Patch takes you on a photo scavenger hunt across your cities. Race to be the first person with the correct answer in the comments. We'll tell the world—on Monday morning, in the activity stream on our homepage—that you are the champion. And really, really smart.