Glenbrook sits on the western shore of Cork Harbour, across the water from Monkstown. It's a quiet residential settlement with a slipway and the departure point for the Glenbrook-Passage West car ferry — a short hop across the estuary that cuts considerable time off the drive to Carrigaline and beyond.
The ferry itself is worth the trip as an experience. The village is pleasant but compact — a few streets of houses above the waterline, good views across to the east bank. Passage West is just across the water. Carrigaline is 5km south.
Off the R610 south of Passage West. Follow signs for the ferry slipway.