Dublin is the capital of, and largest city in, Ireland. It is on the east coast of Ireland, in the province of Leinster, at the mouth of the River Liffey, and is bordered on the south by the Wicklow mountains. It has an urban area population of 1,173,179, while the population of the Dublin Region (formerly County Dublin), as of 2016, was 1,347,359, and the population of the Greater Dublin area was 1,904,806.

There is archaeological debate regarding precisely where Dublin was established by Celtic-speaking people in the 7th century AD. Later expanded as a Viking settlement, the Kingdom of Dublin, the city became Ireland's principal settlement following the Norman invasion. The city expanded rapidly from the 17th century and was briefly the second largest city in the British Empire before the Acts of Union in 1800. Following the partition of Ireland in 1922, Dublin became the capital of the Irish Free State, later renamed Ireland.

Dublin is a historical and contemporary centre for education, the arts, administration and industry. As of 2018 the city was listed by the Globalization and World Cities Research Network (GaWC) as a global city, with a ranking of "Alpha -", which places it amongst the top thirty 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.

Isafjörður, meaning ice fjord or fjord of ice, ice in plural genitive) is a town in the northwest of Iceland.

The oldest part of Ísafjörður with the town centre is located on a spit of sand, or eyri, in Skutulsfjörður, a fjord which meets the waters of the larger fjord Ísafjarðardjúp. With a population of about 2,600, Ísafjörður is the largest settlement in the peninsula of Vestfirðir (Westfjords) and the administration centre of the Ísafjarðarbær municipality, which includes – besides Ísafjörður – the nearby villages of Hnífsdalur, Flateyri, Suðureyri, and Þingeyri.

 St. John's is the capital and largest city of the Canadian province of Newfoundland and Labrador. It is on the eastern tip of the Avalon Peninsula on the large Canadian island, Newfoundland. The city spans 446.04 square kilometres (172.22 sq mi) and is North America's easternmost city.

Its name has been attributed to the Nativity of John the Baptist, when John Cabot was believed to have sailed into the harbour in 1497 and to a Basque fishing town with the same name. Existing on maps as early as 1519, it is the oldest city in North America. It was officially incorporated as a city in 1888. With a metropolitan population of approximately 219,207 (as of July 1, 2017), the St. John's Metropolitan Area is Canada's 20th largest metropolitan area and the second largest Census Metropolitan Area (CMA) in Atlantic Canada, after Halifax.

The city has a rich history, having played a role in the French and Indian War, the American Revolutionary War, and the War of 1812. Italian inventor Guglielmo Marconi received the first transatlantic wireless signal in St. John's. Its history and culture have made it into an important tourist destination.

Saint Pierre and Miquelon is a tiny French archipelago located off the coast of Canada’s Newfoundland and Labrador province. It's the last remnant of French territory in North America, where the euro is used, French laws apply, and streets feel distinctly European—with bakeries, baguettes, and colorful houses set against the rugged North Atlantic backdrop.

The archipelago includes two main islands—lively Saint Pierre and the wilder, more spacious Miquelon. Visitors can witness whale migrations, hike scenic trails, or explore on bikes and snowshoes. A curious fact: during the U.S. Prohibition era, Saint Pierre served as a key hub for alcohol smuggling, a story still told in the local museum.

Sydney is the state capital of New South Wales and the most populous city in Australiaand Oceania. Located on Australia's east coast, the metropolis surrounds Port Jackson and extends about 70 km (43.5 mi) on its periphery towards the Blue Mountains to the west, Hawkesbury to the north, and Macarthur to the south. Sydney is made up of 658 suburbs, 40 local government areas and 15 contiguous regions. Residents of the city are known as "Sydneysiders". As of June 2017, Sydney's estimated metropolitan population was 5,131,326, and is home to approximately 65% of the state's population.

Halifax, also known as the Halifax Regional Municipality (HRM), is the capital of the Canadian province of Nova Scotia. The municipality had a population of 403,131 in 2016, with 316,701 in the urban area centred on Halifax Harbour. The regional municipality consists of four former municipalities that were amalgamated in 1996: Halifax, Dartmouth, Bedford, and Halifax County.

Halifax is a major economic centre in Atlantic Canada with a large concentration of government services and private sector companies. Major employers and economic generators include the Department of National Defence, Dalhousie University, Saint Mary's University, the Halifax Shipyard, various levels of government, and the Port of Halifax. Agriculture, fishing, mining, forestry and natural gas extraction are major resource industries found in the rural areas of the municipality.

The world famous city of New York , the largest city in the United States, with a population of 8.5 million people, and with suburbs - 20.6 million. New York is the largest economic, political, scientific, and cultural center of the United States. It is rightly called the "Main Gate" in the United States, and the world's largest John F. Kennedy Airport is located here. One of the distinguishing features of the city is the variegated national composition of the population, also called the United States in Miniature.

New York gathered in itself the whole essence of this country: fashion, religion, goods, pace and rhythm of American life. The UN headquarters is located here. There are also many universities in New York, the Academy of Sciences, and many other scientific institutions. Like any other metropolis in the world, New York invites you to visit numerous museums in the city, theaters and concert halls, including the Metropolitan Opera and Carnegie Hall. A great place to relax in New York is Central Park, where you can feed hand-held squirrels, which, to everyone's surprise, are not afraid of people. You can also appreciate the beauty of the famous Empire State Building, with a height of 102 floors, it is an example of skyscrapers, although it was built in 1829-1831. "Must see" in New York, of course, the Statue of Liberty ("Lady Liberty"), located at the mouth of the Hudson River, on the small island of Liberty. And of course, don't forget to stroll along Broadway.