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       1. HALF DAY OPTIONS: Downhill and Mussenden Temple Mussenden Temple lies north east from Londonderry in one of Northern Ireland's unique National Trust Properties at Downhill on the shores of Lough Foyle. This splendid estate was laid out in the late 18th century by the Earl Bishop, Frederick Harvey of the Harvey's Bristol Ceam family. The estate includes the ruins of the Bishop's palatial house, gardens and glen. It also holds the Bishop's follie, Mussendem Temple, a famous landmark which was designed as a library. This tour also brings in the mountainous Bishop's Road providing spectacular views of the north west before stopping at the picturesque town of Limavady, where the famous 'Danny Boy' or 'Londonderry Air' originated.