Bilbao is a municipality and city in Spain, a major city in the province of Biscay in the autonomous community of the Basque Country. It is the main urban area in what is defined as the Greater Basque region. Situated in the north-central part of Spain, its main urban core is surrounded by two small mountain ranges. After its foundation in the early 14th century by Diego López V de Haro, head of the powerful Haro family, the city was a commercial hub of the Basque Country that enjoyed significant importance in Green Spain. This was due to its port activity based on the export of iron extracted from the Biscayan quarries. Throughout the nineteenth century and the beginning of the twentieth, Bilbao experienced heavy industrialisation, making it the centre of the second-most industrialised region of Spain. Today, Bilbao is a vigorous service city that is experiencing an ongoing social, economic, and aesthetic revitalisation process, started by the iconic Bilbao Guggenheim Museum, and continued by infrastructure investments, such as the airport terminal, the rapid transit system, the tram line, the Alhóndiga, and the currently under development Abandoibarra and Zorrozaurre renewal projects. Bilbao is also home to football club Athletic Club de Bilbao, a significant symbol for Basque nationalism due to its promotion of Basque players and one of the most successful clubs in Spanish football history.

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.

Waterford is the oldest city in Ireland famous for its crystal ware and intriguing medieval history. Located on the River Suir, Waterford was once one of the most important European ports in times past. Today, Waterford still maintains its 'small Irish town' feel, and has a much more relaxed vibe than the larger cities, whilst still providing for most traveler's tastes. Appealing most, perhaps, to interests including history, culture, music and arts. Waterford, like most Irish towns, has a lot of pubs.

Derry is the second-largest city in Northern Ireland and the fourth-largest city on the island of Ireland. The name Derry is an anglicisation of the Irish name Daire or Doiremeaning "oak grove". In 1613, the city was granted a Royal Charter by King James I and gained the "London" prefix to reflect the funding of its construction by the London guilds. While the city is more usually known colloquially as Derry, Londonderry is also commonly used and remains the legal name. The old walled city lies on the west bank of the River Foyle, which is spanned by two road bridges and one footbridge. The city now covers both banks (Cityside on the west and Waterside on the east). The district administered by Derry City and Strabane District Council contains both Londonderry Port and City of Derry Airport.

Liverpool is an important city of Merseyside, England. It was founded as a borough in 1207 and was granted city status in 1880. It is a major city famed for culture, football teams, The Beatles and buzzing nightlife. It lies within the historic county boundaries of Lancashire. It is also a large, vibrant city with great cultural heritage and was awarded the title of European Capital of Culture 2008, with the famous Pier Head Waterfront being a UNESCO World Heritage site since 2004.

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.

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.

The capital of Portugal, Lisbon (Portuguese: Lisboa) has experienced a renaissance in recent years, with a contemporary culture that is alive and thriving and making its mark in today's Europe. Perched on the edge of the Atlantic Ocean, Lisbon is one of the rare Western European cities that faces the ocean and uses water as an element that defines the city. Lisbon enchants travellers with its white-bleached limestone buildings, intimate alleyways, and an easy-going charm that makes it a popular year-round destination.

Bordeaux is a port city on the Garonne River in southwest France, with an estimated (2008) population of 250,082. The Bordeaux-Arcachon-Libourne metropolitan area, has a population of 1,010,000 and constitutes the sixth-largest urban area in France. It is the capital of the Aquitaine region, as well as the prefecture of the Gironde department. Its inhabitants are called Bordelais. Bordeaux is the world's major wine industry capital. It is home to the world's main wine fair, Vinexpo, while the wine economy in the metro area moves 14.5 billion euros each year. Bordeaux wine has been produced in the region since the eighth century. The historic part of the city is on the UNESCO World Heritage List as "an outstanding urban and architectural ensemble" of the 18th century.

Porto (also known as Oporto in English), is the second largest city in Portugal after Lisbon and one of the major urban areas of the Iberian Peninsula. The urban area of Porto, which extends beyond the administrative limits of the city, has a population of 1.4 million (2011) in an area of 389 km2 (150 sq mi), making it the second-largest urban area in Portugal. Located along the Douro river estuary in Northern Portugal, Porto is one of the oldest European centres, and its historical core was proclaimed a World Heritage Site by UNESCO in 1996. The western part of its urban area extends to the coastline of the Atlantic Ocean. Its settlement dates back many centuries, when it was an outpost of the Roman Empire. One of Portugal's internationally famous exports, port wine, is named for Porto, since the metropolitan area, and in particular the caves of Vila Nova de Gaia, were responsible for the packaging, transport and export of the fortified wine. In 2014, Porto was elected The Best European Destination by the Best European Destinations Agency.

Barcelona – Spain's enchanting capital, second largest and most populous city. It is a huge city that vibrates with life, and there’s certainly not another city in the country to touch it for its sheer style, looks or energy. It is one of the world's leading tourist, economic, trade fair and cultural centers, and its influence in commerce, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities. Barcelona is home to masterpieces of many great architects – the most famous of which is Antoni Gaudí.