If you know what this is a picture of, and where it was taken, you could win a prize in the CNET Picture of the Week challenge.

Update (Monday, 10:31 a.m. PDT): The answer to last week's challenge--which 79 people got--is the First Division Monument, in President's Park, just south of the Eisenhower Executive Office Building, in Washington, D.C. The monument honors soldiers who fought in World War I, though it has additions which honor soldiers who fought in subsequent wars. Thanks to everyone who played, and to all, please come back Thursday for this week's challenge.

If there's one thing certain about this, it's that it honors a group of people who gave a lot of themselves. But what is it, and where is it located If you know, you could win a prize in the CNET Road Trip Picture of the Week challenge.

If you have those answers, please e-mail them to me no later than 6 p.m. PDT Friday (to daniel--dot--terdiman--at--cnet--dot--com, and PLEASE include "Picture of the Week" in the subject line). I'll choose a winner at random from among everyone who sends in all three pieces of the correct answer. Please forgive me if you don't hear from me if you're not the winner. I get dozens of responses.

Also, I've turned off comments because some people would post the correct answers there. I hate to shut down discussion, but I want you to figure out the answer on your own.

One caveat: no individual can win more than two prizes.

Also, for everyone who played regularly during Road Trip 2010, please note that this is the ninth of the weekly Picture of the Week challenges. With Road Trip 2010 officially finished--and therefore no more new Road Trip pictures per se--the challenge is now taking place weekly, each Thursday, and the photos could come from anywhere, not just Road Trip 2010 locations, and might be related to stories I've written in the past. So, please have fun playing today, and then come back each Thursday.

For most of the summer, Geek Gestalt was on Road Trip 2010. After driving more than 18,000 miles in the Rocky Mountains, the Pacific Northwest, the Southwest and the Southeast over the last four years, I drove 5,266 miles this summer looking for the best in technology, science, military, nature, aviation and more throughout the American Northeast. You can follow me on Twitter at @GreeterDan and @RoadTrip and find the project on Facebook.