Today, you'll head to Donegal town. Centred on its ancient marketplace, the Diamond, Donegal has a rich history reflected its imposing Jacobean castle, which sits above the River Eske. The 70-minute waterbus trip (payable locally) around Donegal Bay offers another scenic perspective on this attractive town – especially on fine days. See the seal colony on Seal Island, the Bluestack Mountains and the many islands dotted around the bay. Back on shore you'll find no shortage of pubs and restaurants where you can grab a spot of lunch.

Today’s fascinating excursion takes you to the remote Inishowen Peninsula, a typically northern Irish landscape that includes Ireland’s most northerly point, Malin Head (familiar to listeners of the Shipping Forecast everywhere). Bordered by the waters of Lough Foyle and Lough Swilly, and the pristine beaches of the Atlantic coast, its towering mountains rising from a landscape dotted with ancient Celtic crosses and crumbling churches, Inishowen is a scenic delight.

Your day includes a visit to the Doagh Isle Famine Village, an outdoor museum where the sights, sounds and stories of Irish life, from the famine of the 1840s to the present day, are recreated. The attraction is built around original thatched houses that were inhabited until 1983.

From here, you’ll travel through the beautiful, timeless landscape, and on through the remote peninsula town of Carndonagh, to wild, windswept Malin, to enjoy the stupendous views, which stretch to the distant west of Scotland on clear days.

The highlight of the whole tour for many will be today’s excursion to the breathtaking Giant’s Causeway. Long associated with legendary Irish hero Finn McCool, this astonishing collection of closely packed basalt columns, which rise like steppingstones from the Atlantic to the wild, windswept cliffs above, was formed after a volcanic eruption 60-million years ago.

Your visit will include entry to the Visitor Centre, where you'll receive a free audio-guide to take to the stones and have the chance to explore the exhibits in the active interpretation area. Take the short minibus trip from the visitor centre to the Causeway (small charge, typically payable locally), or walk the mile or so along the cliff path to take in the breathtaking views and sea air.

Continue to visit the city of Derry. On this walking tour, you'll view the 400-year-old city walls and learn about the city's marvellous history dating back to medieval times to modern day. Derry is renowned for its street murals and there will be an opportunity to visit and view these.

Today, you'll head to Glenveagh National Park. This remote area of outstanding natural beauty is home to herds of wild deer, and a sanctuary for the endangered golden eagle and many other species of wildlife. By contrast to most of the rugged landscape, Glenveagh Castle, which overlooks the peaceful waters of Lough Veagh, comes as something of a surprise. A guided tour of the castle's keep and mismatched towers offers a real glimpse into a lifestyle of an earlier age, and you'll also have time to explore the spectacular gardens.

Your route back to Letterkenny takes you back to the coast, via Mount Errigal and through Dunlewy village to Bunbeg. Here (weather permitting) you may like a stretch your legs with a stroll along the sandy beach before continuing up and around the Bloody Foreland (named for the red hue of the rocks at sunset), for a final stop in one of the area's quaint villages, such as Dunfanaghy.

Bid farewell to Donegal, today, and return to Belfast airport to catch your flight home.