Treasure Chest Thursday - Any Ideas?

I am using some of my [thousands] of photographs taken in all 48-contiguous states, as well as photographs I took in Europe, over the next few months for my Treasure Chest Thursday posts.

I'll let you, the reader, guess as to where the photograph was taken. All answers will be posted the following day.

Here's today's post:

 

Leave your best guess in the comments below.

Check back tomorrow for the correct answer.