Take Route 93 North to Exit 41 (Andover/North Andover). Go right off the exit and travel 2.2 miles. Go through 2 sets of lights, under an overpass and up onto Route 28 North. Travel 2.2 miles to 283 South Main Street on the left. Go around to the back of the building and up to the second floor.
From NH and Points North...
Take Route 93 South to Route 495 South. Take Exit 41 onto Route 28 (Andover). Go through downtown and up the hill to Phillips Academy. At the Phillips Academy bell tower, continue for another .3 mile to 283 South Main Street on the right. Go around to the back of the building and up to the second floor.