Road Trip Pic of the Week, 11/4: What is this?

If you know what this is and where it's located, you could win a prize in the CNET Road Trip Picture of the Week challenge.

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

Update (Monday at 11:24 a.m. PT): The answer to last week's challenge--which 86 people got--is the Old Post Office Pavilion, on Pennsylvania Avenue, in Washington, D.C. Thanks to all who played, and to everyone, please come back on Thursday for this week's challenge.

What a majestic building. Surely, something very solemn went on here. 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 both 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 11th 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 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.

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