 Y Ganolfan on Stryd Fawr, built in 1975, is a venue for concerts, exhibitions and other community events, and has hosted televised wrestling matches.Porthmadog Maritime Museum on Oakley Wharf is housed in an old slate shed and has displays about the schooners built in the town and the men who sailed in them.The Cob is a substantial embankment built across the Glaslyn estuary in 1811 by William Madocks to reclaim land at Traeth Mawr for agriculture.