Belfast (meaning: "mouth of the sandbanks") is the capital and largest city of Northern Ireland, the second-largest city in Ireland after Dublin, and is situated around the River Lagan, which runs through the city. It is a port city known as the birthplace of the RMS Titanic, and for its political murals, documenting the ‘Troubles’ of the 20th century. Today, Belfast remains a centre for industry, as well as the arts, higher education, business, and law, and is the economic engine of Northern Ireland. The city suffered greatly during the period of conflict called "the Troubles", but latterly has undergone a sustained period of calm, free from the intense political violence of former years, and substantial economic and commercial growth. Additionally, Belfast city centre has undergone considerable expansion and regeneration in recent years, notably around Victoria Square.

Galway is a city in County Galway, Republic of Ireland. It is the fifth largest and the fastest-growing city in Ireland. Located on the west coast of Ireland, the city’s hub is 18th-century Eyre Square, a popular meeting spot surrounded by shops and traditional pubs that often offer live Irish folk music.  Galway is famed as Ireland's Cultural Heart and is renowned for its vibrant lifestyle and numerous festivals, celebrations and events. Every July, Galway hosts the Galway Arts Festival which is known for its famous Macnas parade.

Cork - meaning "marsh", is a city in Ireland located in the South-West Region in the province of Munster. With a population of 125,622, it is the second largest city in the state and the third most populous on the island of Ireland.  The city is built on the River Lee which splits into two channels at the western end of the city; the city centre is divided by these channels. They reconverge at the eastern end where the quays and docks along the river banks lead outwards towards Lough Mahon and Cork Harbour, one of the world's largest natural harbours. The city's cognomen of "the rebel city" originates in its support for the Yorkist cause during the English 15th century Wars of the Roses. Corkonians often refer to the city as "the real capital" in reference to the city's role as the centre of anti-treaty forces during the Irish Civil War.

Dublin is the largest and capital city of Ireland. The English name is derived from the Irish name Dubh Linn, meaning "black pool". It is a primate city with an urban population of over 1 million, containing almost 25% of the country's population. Dublin is situated near the midpoint of Ireland's east coast, at the mouth of the River Liffey, and at the centre of the Dublin Region. The city is listed by the Globalization and World Cities Research Network (GaWC) as a global city, with a ranking of "Alpha-", placing it among the top thirty cities in the world. It is a historical and contemporary centre for education, the arts, administration, economy and industry.

Limerick is the fourth largest city in the Republic of Ireland, and the principal city of County Limerick and Ireland's Mid-West Region. Population wise, it is the fifth largest city in all of Ireland. When taking the extra-municipal suburbs into account, Limerick is the third largest conurbation in the Republic of Ireland, with an urban population of 90,757. Limerick is the second-largest city in the province of Munster, an area which constitutes the midwest and southwest of Ireland. The city is situated on several curves and islands of the River Shannon, which spreads into an estuary shortly after Limerick.

Ireland is an island in north-western Europe which has been divided politically since 1920. Most of the island is made up of Ireland (the Republic of Ireland). The remainder is Northern Ireland, which is part of the United Kingdom. An uncommon geological richness and the warming effect of the Atlantic produce an astonishing diversity of terrain on this lovely island, which is splashed throughout with lakes and primeval bogland. Ireland also adds further interest to the landscape through the sacred associations of so many of its physical features.