You have to stop thinking of wide streets with square angles and open views where a camera monitoring the back loading dock, for instance, also shows who is walking by on the other side. That's just not how Boston is laid out. It's a maze, and even people who are quite familiar with it will take a wrong turn and find themselves in a place they didn't know existed.
So here are some pictures I found on the web. I think they're all public. If you click on them, you can enlarge them.
This is the back of the Bell in Hand looking toward the Union Oyster House, with several other taverns, pubs, and restaurants in the picture.
This is another side street looking toward the Union Oyster House (the biggest landmark). The street from Picture 1 is in the background. Notice the car pulling out from an angle and how similar the two streets are.
This is the holocaust memorial, with the Union Oyster House and pub row in the background, and the Public Market building just visible on the left. The Rose Kennedy Memorial Greenway and, um, I think it's Congress Street, is behind the camera.
This is the Boston Public Market. The trees on the right are the end of the Holocaust Memorial. The brick building with the letters on the roof ridge are about where the pubs are located, but I'm not sure which building. Probably the Union Oyster House.
I found this map of the area on a site about the Big Brother TV show. Apparently the Bell in Hand was featured in season 13. Notice in the inset picture you can see the Public Market building in the background. Notice also that the Bell in Hand's building is an odd shape, with a sharply rounded end that fits into a more or less triangular street corner. The pub has entrances on both sides and possibly in the back. If there's a camera on the back door of the Union Oyster House, it would not have a view past that corner.
