Take I-95 to Exit 3/Arch Street. Turn left at the light (if you are heading north) or turn right at the light (if you are heading south). Pass under the Metro North Railroad bridge. Continue straight through the traffic light (and cross over Railroad Avenue).
Make the first left onto Sound View Drive. At the top of the hill bear right and continue onto Field Point Road. Town Hall will be on your right. At the second traffic light, bear left to continue on Field Point Road. Turn right at the next traffic light onto West Putnam Avenue. Greenwich Library is on your left. Turn left at the far end of the building into the parking lot. The Flinn Gallery is on the second floor of the library.