Name: Calatrava/Green One
Milwaukee Lakefront, Southeastern Wisconsin

Terrain: Easy, but some long walks.
Difficulty: Just a lot of numbers.

Placed: October 22, 2001
By: Bob Marx

Don't be intimidated. This is actually two letterboxes!

Start at Milwaukee's new addition to the Art Museum designed by Calatrava.
Marvel at the engineering of the footbridge suspended over the road by how
many cables?

Move north to the open terrace of the old Art Museum/War Memorial where you
can admire the Calatrava's lakeside facade. Then from the center of the
terrace, look north (20 degrees Magnetic) and travel to the three brown
marble columns at the south end of the lagoon.

Subtract the number of columns from the number of marble benches, then add
the number of short marble posts that surround you to arrive at "the
monument number".

Locate the flag poles nearby at the intersection of five paths. Enjoy a long
walk along the lake to the farthest point of land east (3/4 mile). Wait
until you're alone, then beneath Green One, find a bonus letterbox hidden
behind a clever false back. Replace it and the camouflage carefully.

Add the number of cables supporting Calatrava's footbridge to the number of
flag poles at "Five Paths". From Green One, take that number of steps north
along the breakwall and find the number in the red circle. (Careful, don't
fall in.)

Return to the Vietnam Monument. To pass the time during the walk, multiply
"the monument number" by the square of the "red circle number". This is your
bearing. Now stand between the three tall columns and follow your bearing to
a giant maple tree (14 feet in circumference). PLEASE BE VERY CAREFUL NOT TO
BE RUN OVER. IT'S A BUSY STREET.