  We are searching for large-scale structures in the distribution of AGN
discovered by the ROSAT All-Sky Survey. The RASS detected > 60000 X-ray
objects, of which approximately 35% are AGN at z < 0.5. The surface density in
the extragalactic sky is approximately 0.5 AGN/deg^2, which has not been
reached until now by any other survey for this redshift range. We efficiently
single out the AGN among all the RASS sources using the Hamburg/RASS database
of optical identifications, which contains presently 13867 entries.
  Follow-up spectroscopy of RASS AGN candidates identified in selected areas of
the northern sky is underway to determine the spatial distribution of the AGN
in these areas. In every area structures reminiscent of clusters and filaments
are found on scales 50 - 100 h^{-1}Mpc. These structures have a similar size as
the serendipitously discovered groups of AGN in optical surveys at higher
redshifts. Samples of low redshift AGN drawn from the RASS are large enough to
be used with samples of higher redshift to study evolutionary effects in the
large-scale distribution of AGN.
