I must be super predictible. Out of all the votes, only 2 different answers were given: Israel and Oahu, Hawaii. Wow.
This wall is located in...
Tel Dan, Israel. It was built sometime during the 9th century BC, most likely by King Ahab, and is part of the second gatehouse area. You can read more about Tel Dan here.
The person with the first correct answer was Sarah. She has won a gift certificate to shutterfly.com, one of my favorite sites. And, personally, I think it is a perfect gift for her since she has an adorable little boy and a mom who takes amazing pictures.
Thanks to those of you who played, and to those of you who didn't, you missed out on a ton of fun. Well, maybe you just missed out on the prize.