From the South:

• 93 North, through Boston until you get to Exit 28 for Sullivan Square.
• Take the Sullivan Square exit and go left at the end of the off ramp onto Washington/Cambridge Street (same street, but the name changes).
• Follow Washington/Cambridge Street through a couple of traffic lights until you get to the McGrath/O'Brian Highway, also known as Route 28 North.
• Take a right on the McGrath/O'Brian Highway and immediately keep to the left.
• As you are ramping up to the highway and keeping to the left, you will see that the highway actually continues off to the right. Instead of following it to the right, you want to go to the light directly in front of you and go straightish (but slightly to the left). If you find yourself going over a metal railroad bridge, you have accidentally followed 28 North. If that is the case, turn around and follow the directions for coming from the north.
• After you go straight through that light, you will veer left at another light shortly after it. This will put you on Highland Street.
• Pass a couple of streets on your left, and you will see Somerville High School on your right. At that point, take a left onto Vinal Ave.
• We are down near the bottom of the hill on the left hand side at #17 Vinal Ave.
• Park anywhere on the street. No permit is required.
• Come in through the side door.