Take I-93 North from Route 128. Just a few miles from the Hookset toll station, exit onto I-89 North.
Take Exit 9 in Warner and bear right onto Route 103 West. Continue on Route 103 past Sunapee State Park, through Newport and into Claremont.
Once in Claremont
Remain in the right lane until you reach Opera House Square (small rotary). Take Pleasant Street (it looks like it could be called "Main Street") to the second light.
Diagonally on the left, past the light, you will see the Mansion. Take Hillstead Road to the entrance.