Ringaskiddy is a village in Co Cork. It is located on the western side of Cork Harbour, south of Cobh, and is 15km from Cork City, to which it is connected by the N28 road. The village is a port with passenger ferry services to France. Over the years Ringaskiddy has transformed from a quiet fishing village to a transport and industrial centre. It is now one of the largest employment hubs in the Cork area. The village is close to Cork Airport, as well as picturesque areas such as Crosshaven and Monkstown. A Martello Tower exists on the hilltop at Ringaskiddy, with other forts and towers in the harbour. This tower can be reached from the Lough Beg road and offers panoramic views of Cork Harbour. Ringaskiddy is an important industrial centre, particularly for pharmaceutical companies such as Centocor, GlaxoSmithKline, Hovione, Novartis, Pfizer, and Recordati. Most of the world's supply of the erection-treatment drug Viagra is manufactured there. The National Maritime College of Ireland is based in Ringaskiddy. The college provides the only training in Ireland of Merchant Navy personnel, and the Irish Naval Service also carry out their non-military training there. The Irish Naval Service base at Haulbowline is 3 kilometres from Ringaskiddy on the L2545 local road. There are also a selection of pubs, restaurants and shops in Ringaskiddy, as well as a national school.