13 nights, from Amsterdam

Amsterdam is the capital city and most populous municipality of the Netherlands. Its status as the capital is mandated by the Constitution of the Netherlands, although it is not the seat of the government, which is The Hague. Amsterdam has a population of 851,373 within the city proper, 1,351,587 in the urban area] and 2,410,960 in the metropolitan area. The city is located in the province of North Holland in the west of the country but is not its capital, which is Haarlem. The metropolitan area comprises much of the northern part of the Randstad, one of the larger conurbations in Europe, with a population of approximately 8 million.

Brussels , officially the Brussels-Capital Region is a region of Belgiumcomprising 19 municipalities, including the City of Brussels, which is the capital of Belgium. The Brussels-Capital Region is located in the central portion of the country and is a part of both the French Community of Belgium and the Flemish Community, but is separate from the Flemish Region (in which it forms an enclave) and the Walloon Region. Brussels is the most densely populated and the richest region in Belgium in terms of GDP per capita. It covers 161 km2 (62 sq mi), a relatively small area compared to the two other regions, and has a population of 1.2 million. The metropolitan area of Brussels counts over 2.1 million people, which makes it the largest in Belgium. It is also part of a large conurbation extending towards Ghent, Antwerp, Leuven and Walloon Brabant, home to over 5 million people.

Brussels grew from a small rural settlement on the river Senne to become an important city-region in Europe. Since the end of the Second World War, it has been a major centre for international politics and the home of numerous international organisations, politicians, diplomats and civil servants. Brussels is the de facto capital of the European Union, as it hosts a number of principal EU institutions (the two other capitals are Luxembourg and Strasbourg) and its name is sometimes used metonymically to describe the EU and its institutions.The secretariat of the Benelux and headquarters of NATO are also located in Brussels. As the economic capital of Belgium and one of the top financial centres of Western Europe with Euronext Brussels, it is classified as an Alpha global city. Brussels is a hub for rail, road and air traffic, sometimes earning the moniker "Crossroads of Europe". The Brussels Metrois the only rapid transit system in Belgium. In addition, both its airport and railway stations are the largest and busiest in the country.

Historically Dutch-speaking, Brussels saw a language shift to French from the late 19th century. The Brussels-Capital Region is officially bilingual in French and Dutch, even though French is now the de facto main language with over 90% of the population speaking it. Brussels is also increasingly becoming multilingual. English is spoken as a second language by nearly a third of the population and a large number of migrants and expatriates speak other languages.

Brussels is known for its cuisine and gastronomy, as well as its historical and architectural landmarks; some of them are registered as UNESCO World Heritage sites. Main attractions include its historic Grand Place, Manneken Pis, Atomium, and cultural institutions such as La Monnaie and the Museums of Art and History. It is also a capital of the comic strip.

Belfast is a port city in the United Kingdom and the capital city of Northern Ireland, on the banks of the River Lagan on the east coast of Ireland. It is the largest city in Northern Ireland and second largest on the island of Ireland. It had a population of 333,871 in 2015.

By the early 1800s Belfast was a major port. It played a key role in the Industrial Revolution, becoming the biggest linen producer in the world, earning it the nickname "Linenopolis". By the time it was granted city status in 1888, it was a major centre of Irish linen production, tobacco-processing and rope-making. Shipbuilding was also a key industry; the Harland and Wolff shipyard, where the RMS Titanic was built, was the world's biggest shipyard. It also has a major aerospace and missiles industry. Industrialisation and the inward migration it brought made Belfast Ireland's biggest city and it became the capital of Northern Ireland following the Partition of Ireland in 1922. Its status as a global industrial centre ended in the decades after the Second World War.

Belfast suffered greatly in the Troubles, and in the 1970s and 1980s was one of the world's most dangerous cities. However, the city is now considered to be one of the safest within the United Kingdom. Throughout the 21st century, the city has seen a sustained period of calm, free from the intense political violence of former years and has benefitted from substantial economic and commercial growth. Belfast remains a centre for industry, as well as the arts, higher education, business, and law, and is the economic engine of Northern Ireland. Belfast is still a major port, with commercial and industrial docks dominating the Belfast Lough shoreline, including the Harland and Wolff shipyard. It is served by two airports: George Best Belfast City Airport, and Belfast International Airport 15 miles (24 km) west of the city. It is listed by the Globalization and World Cities Research Network (GaWC) as a Gamma global city.

Akureyri is a town in northern Iceland. It is Iceland's Fifth largest municipality.

Nicknamed the Capital of North Iceland, Akureyri is an important port and fishing centre. The area where Akureyri is located was settled in the 9th century but did not receive a municipal charter until 1786. The town was the site of Alliedunits during World War II. Further growth occurred after the war as the Icelandic population increasingly moved to urban areas.

The area has a relatively mild climate because of geographical factors, and the town's ice-free harbour has played a significant role in its history.

Akureyri is a town in northern Iceland. It is Iceland's Fifth largest municipality.

Nicknamed the Capital of North Iceland, Akureyri is an important port and fishing centre. The area where Akureyri is located was settled in the 9th century but did not receive a municipal charter until 1786. The town was the site of Alliedunits during World War II. Further growth occurred after the war as the Icelandic population increasingly moved to urban areas.

The area has a relatively mild climate because of geographical factors, and the town's ice-free harbour has played a significant role in its history.

Reykjavík is the capital and largest city of Iceland. It is located in southwestern Iceland, on the southern shore of Faxa Bay. Its latitude is 64°08' N, making it the world's northernmost capital of a sovereign state. With a population of around 123,300 (and over 216,940 in the Capital Region), it is the heart of Iceland's cultural, economic and governmental activity, and is a popular tourist destination.

Reykjavík is believed to be the location of the first permanent settlement in Iceland, which, according to Ingólfr Arnarson, was established in AD 874. Until the 19th century, there was no urban development in the city location. The city was founded in 1786 as an official trading town and grew steadily over the following decades, as it transformed into a regional and later national centre of commerce, population, and governmental activities. It is among the cleanest, greenest, and safest cities in the world.

Reykjavík is the capital and largest city of Iceland. It is located in southwestern Iceland, on the southern shore of Faxa Bay. Its latitude is 64°08' N, making it the world's northernmost capital of a sovereign state. With a population of around 123,300 (and over 216,940 in the Capital Region), it is the heart of Iceland's cultural, economic and governmental activity, and is a popular tourist destination.

Reykjavík is believed to be the location of the first permanent settlement in Iceland, which, according to Ingólfr Arnarson, was established in AD 874. Until the 19th century, there was no urban development in the city location. The city was founded in 1786 as an official trading town and grew steadily over the following decades, as it transformed into a regional and later national centre of commerce, population, and governmental activities. It is among the cleanest, greenest, and safest cities in the world.

Amsterdam is the capital city and most populous municipality of the Netherlands. Its status as the capital is mandated by the Constitution of the Netherlands, although it is not the seat of the government, which is The Hague. Amsterdam has a population of 851,373 within the city proper, 1,351,587 in the urban area] and 2,410,960 in the metropolitan area. The city is located in the province of North Holland in the west of the country but is not its capital, which is Haarlem. The metropolitan area comprises much of the northern part of the Randstad, one of the larger conurbations in Europe, with a population of approximately 8 million.