A runner's shoes at the memorial, next to the message: "We will never forget you."
The memorial is at the corner of Hereford and Boylston, where the road block remains in place.
A man signs the barrier at the memorial in Boston.
A message expresses solidarity from the Irish people to the people of Boston.
Many signed a barrier at the memorial, creating a makeshift signature wall.
Many brought flowers to the memorial, including Nikki Chenard, who brought flowers given to her at her graduation.
A child's poster at the memorial in Boston