Tonight I realized one of my characters needs to visit the offices of the Billboard Magazine in St. Louis, MO. After less than five minutes of Googling around, I have the address of the building and photos of the interior and exterior at the time of my story. These images provide architectural details, directional orientation and info on surrounding buildings.
And I am thrilled, even though my writing includes very little direct description. Details like this mostly give me ways to let the characters interact with their surroundings. My character might leave finger smudges on the brass doors of the north side of the building or feel wary of the gargoyles guarding the entrance. His wife might browse the shops in the building's arcade while he does his business. He might join her at a 2nd floor coffee shop after his meeting. He's very likely to head straight from the meeting to the Post Office, which was then directly across Olive Street.
Right now, I don't know for sure what any of it means. I only know that tomorrow, when I peer into my 1-inch frame, the picture will be filled with life and color, richness and texture. All I have to do is watch what happens and write it down.
I have no words for the joy this gives me.