Acropolis
(Gr.
akros,
top,
polis,
city),
literally
the
upper
part
of
a
town.
For
purposes
of
defence
early
settlers
naturally
chose
elevated
ground,
frequently
a
hill
with
precipitous
sides,
and
these
early
citadels
became
in
many
parts
of
the
world
the
nuclei
of
large
cities
which
grew
up
on
the
surrounding
lower
ground.
The
most
famous
is
that
of
Athens,
which,
by
reason
of
its
historical
associations
and
the
famous
buildings
erected
upon
it,
is
generally
known
without
qualification
as
the
Acropolis.