An artistic surprise in a hidden corner of Casa Bonita restaurant, Denver, Colorado.
(btw, if you've never been there the restaurant is a must-see)
The detail of creating this specially shaped nook to showcase the stained glass captivated me, and the history of how this "window" came to be here has got to be fascinating. I suspect it was previously in someone's home - like from early in the previous century or late in the century before that (the 19th). Stained glass was a common - nearly de rigeur - feature of Victorian style.
Taken in June 2010 with the ever-faithful Canon PowerShot A590.