Boston manhole covers

Manhole covers do more than just explode in the North End. They cover, um, manholes all over town. Naturally, somebody has put up a Web site with photos of Boston manhole covers - along with photos of local drain covers and the little metal plates that cover water and gas shutoff valves. Bonus photos show similar metal plates in Cambridge, Brookline and, indeed, across the country and around the world:

... These Boston Water Works water valves reside on sidewalks in the historic Beacon Hill section of Boston.

The bricks and pine needles represent the ever-present puritanical revolutionary fervor of the early settlers. ...