This is the Cambridge office building.

DIRECTIONS TO THE CAMBRIDGE OFFICE

From I-93 North of Boston:
Take I-93 South to "Exit 26 Storrow Drive, North Station".
Near the end of the exit ramp bridge, move to the left lane and follow signs for Storrow Drive.
You will go through a short tunnel.
From the tunnel's exit, follow sign for Storrow Drive West and stay on Storrow Drive for about 3.5 miles. (The road name will change to Soldier's Field Road in about the middle.)
Stay to the right and exit at "Central Square, Mass Pike I-90".
At the end of the exit ramp, make a right turn and cross the river.
Stay in the left lane on this one-way bridge. The first intersection at the end of the bridge is Memorial Drive.
Make a left turn and follow Memorial Drive 1.1 miles.
Make a soft right turn on "Hawthorne Street." Note: the street sign is hard to see, however, there is a Hospital Marker at this intersection.
At the end of the short block, make a left turn onto Mount Auburn Street and go approximately 0.5 mile where you will see the Hospital, Medical Office Building, and Parking Lot on your left.

From I-93 South of Boston and the Mass Turnpike from the East:
Take I-93 North to "Exit 26 Storrow Drive, North Station".
In the exit tunnel, stay in the right lane and follow signs for Storrow Drive.
You will go through a short tunnel. From the tunnel's exit, follow sign for Storrow Drive West and stay on Storrow Drive for about 3.5 miles. (The road name will change to Soldier's Field Road in about the middle.)
Stay to the right and exit at "Central Square, Mass Pike I-90" At the end of the exit ramp, make a right turn and cross the river.
Stay in the left lane on this one-way bridge.
The first intersection at the end of the bridge is Memorial Drive.
Make a left turn and follow Memorial Drive 1.1 miles.
Make a soft right turn on "Hawthorne Street." Note: the street sign is hard to see, however, there is a Hospital Marker at this intersection.
At the end of the short block, make a left turn onto Mount Auburn Street and go approximately 0.5 mile where you will see the Hospital, Medical Office Building, and Parking Lot on your left.

From I-95 & Route 128 West of Boston and the Mass Turnpike from the West:
From I-95 & Route 128 (North and South) take "Exit 25 Massachusetts Turnpike, I-90".
Follow signs for Mass Pike East.
Continue on the Massachusetts Turnpike East for approximately 7.2 miles after the I-95/Route 128 tolls and then take "Exit 18 Brighton, Cambridge".
Note: this is a left lane exit.
On the exit ramp, stay in the right lane and follow the sign for "Cambridge, Somerville," then move to the center lane.
Continue straight through the intersection and move into the left lane on this one-way bridge.
The first intersection at the end of the bridge is Memorial Drive.
Make a left turn and follow Memorial Drive 1.1 miles. Make a soft right turn on "Hawthorne Street".
Note: the street sign is hard to see, however, there is a Hospital Marker at this intersection.
At the end of the short block, make a left turn onto Mount Auburn Street and go approximately 0.5 mile where you will see the Hospital, Medical Office Building, and Parking Lot on your left.

Click on here for a Yahoo map showing the streets around Mount Auburn Hospital.