Road Trip Pic of the Week, 9/2: 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's located, you could win a prize in the CNET Road Trip Picture of the Week challenge. Daniel Terdiman/CNET

Update (Wednesday, 8:13 p.m.): For the first time in this challenge series, no one got the correct answer, which is the Hunt Armory of the Pennsylvania National Guard, in Pittsburgh. Thanks to everyone for being patient while I was on vacation, and please come back Thursday for this week's challenge.

"National?" National what? It could be just about anything, or anywhere. And 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 have those answers, please e-mail them to me no later than 6 p.m. PDT Thursday (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 each day. And, because I'll be on vacation for the next week, I likely won't be notifying the winner or updating the post until I return. So stay tuned.

Also, I've turned off comments because some people have been posting 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. But at the end of the trip, I'll draw a name from among all the daily challenge winners and give out something a little more substantial.

Also, for everyone who has been playing on a regular basis, please note that this is the second of the weekly Picture of the Week challenges. With Road Trip 2010 officially finished --and therefore no more new Road Trip pictures-- the challenge is now taking place weekly , each Thursday. 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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