Road Trip Pic of the Day, 6/21: What is this?

CNET Road Trip 2010 kicks off in earnest this week. Before that happens, check in for the Picture of the Day challenge. If you can identify the photo, you may win a prize.

If you know what this is a picture of, you could win a prize in the CNET Road Trip Picture of the Day challenge. Daniel Terdiman/CNET

Update (Monday, 10:42 p.m.): The answer--which 102 of you got (or, amazingly, 97.1 percent of everyone who responded)--is Santiago Calatrava's Sundial Bridge, in Redding, California. If you weren't the winner, or even if you were, please come back for tomorrow's Picture of the Day Challenge.

There are bridges, and there are bridges. This is one of the most stunning I've ever seen. It's also special to the community where it's located.

Maybe you've been there or seen this, possibly from my previous Road Trip coverage. Either way, I'd love to hear from you if you know what this bridge is called and where it is located. And if you're right, you could win a prize in the CNET Road Trip Picture of the Day challenge.

So if you have those answers, please e-mail them to me no later than 6 p.m. Pacific time Monday (to daniel--dot--terdiman--at--cnet--dot--com, including "Picture of the Day" 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.

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.

On June 24, Geek Gestalt will kick off 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'll be looking for the best in technology, science, military, nature, aviation and more throughout the American northeast. If you have a suggestion for someplace to visit, drop me a line. In the meantime, you can follow my preparations for the project on Twitter @GreeterDan and @RoadTrip and find the project on Facebook.