A sound absorbing structure includes a housing having a front face, and a
side face which is provided perpendicularly around at least a part of an
edge portion of the front face; a gas adsorption material for physically
adsorbing gas in an interior space delimited by the front face and the
side face of the housing, which gas adsorption material is placed in the
interior space; sealing element for sealing the gas adsorption material
from outside thereof; and an acoustic connection section for functioning
as an acoustic mass so as to acoustically connect an exterior space and
the interior space of the housing, which acoustic connection section is
provided in at least one of the front face and the side face.