Carrigtwohill is a town in Cork. It is located 12km east of Cork City and is bypassed by the N25 road. One of the fastest growing towns in the country, it is now a major pharmaceutical and biotechnology hub. The huge rock from which Carrigtwohill derives its name is about half a mile north-eastwards of the town itself, and is in the townland of Carrigane. The rock is honeycombed with caves; some are very large and extend for miles underground where very beautiful stalactites are to be found. The town is the home of Barryscourt Castle. The castle was originally built in the 12th century and rebuilt in the 16th century. The castle grounds house a cafe and a gift shop. It was extensively refurbished between 1991 and 2006. Tours are held daily during the summer months. Fota Island is also located in Carrigtwohill. It is home to Ireland's only Wildlife Park and the Fota Island Resort which has hosted the Irish Open Golf tournament on the European Tour a number of times. Ireland's only permanent drive-in cinema, "Movie Junction", is located in Fota Retail Park to the west of the town. Many large corporations have premises in the IDA Business Park to the west of the town, including GE Healthcare, Stryker Corp., PAS Technologies, Merck Millipore, Abbott Laboratories, Gilead Sciences and Rockwell-Proscon. Carrigtwohill railway station is on the Cork Suburban Rail service between Midleton and Cork city. Passengers for Cobh change at Glounthaune. Carrigtwohill is covered with an extensive bus service, on route 261 from Cork to Midleton. Carrigtwohill is also served by bus routes 240, 241 and 260 with connections to Youghal, Whitegate, Cloyne, Ballycotton and Ardmore. There are also a wide range of sports clubs in the area.