This is the intersection of Boylston and Arlington streets in Boston. Two bombs detonated less than four blocks from here during the Boston Marathon on Monday.
On Tuesday morning, a memorial began to form at the intersection's police barricade.
By noon, there were more than a dozen flowers.
Plus a few Boston tees.
There were tributes to the injured runners, as well as the 8-year-old boy who died.
That boy, Martin Richard, was among three who died in the explosions. At least 176 others were injured.
