Follow signs to I-93/Williams Tunnel/I-90 W and pay the airport toll.  Continue on road and merge onto I-90 West (Massachusetts Turnpike).  Stay on I 90 West for approximately 6 miles (8 minutes) to Exit 20 towards Cambridge.  Pay toll and merge onto Cambridge Street.  Head approximately 200 feet and turn left onto Soldiers Field Road.  Head approximately 0.4 miles and take ramp on right to Harvard Square.  Continue over bridge and follow John F Kennedy Street into Harvard Square. In approximately 360 feet, turn left onto Eliot Street (two parking lots are located on or near Eliot Street – the Harvard Square Parking Garage and the Charles Square Garage).  From Eliot Street, turn right onto University Road and at the end of the road, turn right onto Mount Auburn Street.  HTT Travel is located in the red brick building on the right immediately after the Brattle Street intersection.