HALF DAY OPTIONS   Walking Tour of the City of Derry   Inishowen Penninusla and Greencastle Maritime Museum   Downhill and Mussenden Temple           FULL DAY OPTIONS   Giant's Causeway and Bushmills Distillery   Ulster-American Folk Park and Baronscourt   Glenveagh Castle and National Park   Inishowen Penninusla and Greencastle Maritime Museum           OTHER OPTIONS       2. FULL DAY OPTIONS: Giant's Causeway and Bushmills Distillery A quirk of geology or mythology - we'll leave you to decide as you take in one of Ireland's most extraordinary sights, this world-renowned cluster of basalt columns. Nestled amid the rugged beauty of the North Antrim coast, the Giant's Causeway is one of the so-called 'Natural Wonders of the World' and is a World Heritage Site. This full day tour also includes a visit to Bushmills the oldest distillery in the world where visitors can see the entire production process and sample the product!