Where In Martinez? Tell Us Where This Photo Is Located

There are some things in town that are easy to spot - the Santa Fe Trestle, the John Muir House, the County Adminstration Building - and other things that are, in some way, more hidden from view. 

Yet, due to their location, some of these things can be passed by many times a day or week or month, and still not be really seen. 

Perhaps this photo is one of those examples. Perhaps not. 

Where is it? What is it? Tell us in the comments.