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Troissy
Troissy
is a
commune
in the
Marne department
in
north-eastern
France
.
Sights
and
monuments
Château de Troissy
,
12th century
castle
. Its
crypt
was
classified
monument
historique
in
1924
.
Saint-Martin
church
, classified
monument historique
in
1911
.
Monument
to
the dead