Time to repurpose?

“Inside Bunker Door,’’ by Roy DiCosta, in the show “Obsolete Military Structures,’’ at 6 Bridges Gallery, Maynard, Mass. Only visible now on its Web site.

The gallery says that since 2002, Mr. DiTosti “has been venturing through Massachusetts and Florida photographing old military facilities, bunkers and forts, some dating back to the 1800s or World War II. Some of these structures have been repurposed while others sit abandoned, growing moss and collecting dust. Yet the buildings offer an intriguing glimpse into the past where war was a tangible, ever-present struggle. Those who saw these structures in their heyday likely could not have conceived of a future where they were allowed to go empty and rust over. Now, however, the buildings stand as pieces of history and reminders of a fraught and bloody past. There are lessons to be found in each decaying structure, lessons that Mr. DiTosti's photography aims to uncover for the viewer to learn. There's even a level of familiarity in the old buildings when juxtaposed with today's quiet, empty streets in the face of a different sort of war, one against disease. ‘‘