From Wellesley, Weston and points West:

Follow Route 135 through Wellesley, past Olin College (Great Plain Avenue) and into Needham Center. Take a left on Highland Avenue and travel nearly 1.5 miles to intersection of Highland Avenue and Hunnewell Street. Go left on Hunnewell and take the next right into the parking lot of 400 Hunnewell Street.

From Route 128/95:

Take Highland Avenue West (at Muzi Ford) toward Needham. Follow Highland Avenue for approximately 1 mile and take a right onto Hunnewell Street. Go over the small bridge and take your first right into the parking lot of 400 Hunnewell Street.

From Route 9 East:

Follow Route 9 West to Route 128/95 South. Go South on 128/95 and take a right onto Highland Avenue West toward Needham. Follow Highland Avenue for approximately 1 mile and take a right onto Hunnewell Street. Go over the small bridge and take your first right into the parking lot of 400 Hunnewell Street.

From Mass. Pike:

Take Route 128/95 South to Highland Avenue West toward Needham. Follow Highland Avenue for approximately 1 mile and take a right onto Hunnewell Street. Go over the small bridge and take your first right into the parking lot of 400 Hunnewell Street.