It
took
approximately
three
months
and
50
construction
workers
to
build
It
is
the
largest
underwater
filming
tank
in
Europe
It
holds
half
a
million
gallons
of
water
and
can
be
filtered
in
three
hours.
The
water
is
only
50%
chlorinated,
which
allows
actors
to
remove
goggles
during
filming
without
the
water
irritating
their
eyes.
Grimmauld
Place
Grimmauld
Place
is
the
ancestral
home
of
Sirius
Black's
family.
All
rooms
in
the
set
were
built
separately
but
on
the
same
stage
The
kitchen
table
was
made
specially
and
is
20
feet
long
and
2
feet,
9
inches
wide.
All
of
the
china
in
the
kitchen
was
bought
from
markets,
auctions
and
second-hand
dealers.
The
Black
Family
crest,
'The
Honorable
House
of
Black,"
was
created
by
the
graphics
dept.
and
added
to
the
crockery.
The
bedroom
is
on
the
second
floor
of
the
house
and
is
where
Sirius"
mother
would
have
kept
her
jewelry,
hat
boxes
and
collection
of
fans.
The
furniture
in
the
bedroom
(beds,
wardrobe,
and
dressing
table)
was
bought
at
auction.
There
is
a
painting
of
the
bedroom
on
the
bedroom
wall,
with
unmade
beds
The
black
silk
eiderdowns
on
the
beds
were
made
for
the
film.
The
fabric
used
on
the
hall
and
stairwell
walls
was
made
from
350
meters
of
dark
grey
silk
bought
in
from
India
and
then
screen-printed
in
gold.
The
same
pattern
was
used
on
the
curtains
in
the
drawing
room.
In
the
hallway
and
staircase,
the
elf
heads
in
glass
domes
were
made
by
the
creature
effects
department.
In
the
hallway
there
is
a
giant
troll"s
foot
umbrella
stand.
This
is
a
mold
of
the
troll"s
foot
from
the
first
movie.