Mercantile Wharf is located at the intersection of Commercial Street and Atlantic Avenue. The wharf building was constructed in 1857, and was built as a storage warehouse to support nearby Quincy Market. Shipping related businesses originally occupied the upper floors, which included sail makers and riggers.

The building actually bordered the waterfront at that time, and thus why it was named a wharf. Gridley Bryant was the architect, son of the builder of the Bunker Hill Monument.
The north...