[custom_adv] Hamburg is the second-largest city in Germany after Berlin and 8th largest city in the European Union with a population of over 1.8 million. [custom_adv] Chicago is the county seat of Cook County, the second most populous county in the US, with portions of the northwest side of the city extending into DuPage County near O'Hare Airport. Chicago is the principal city of the Chicago metropolitan area, often referred to as Chicagoland. [custom_adv] Copenhagen is situated on the eastern coast of the island of Zealand; another small portion of the city is located on Amager, and it is separated from Malmö, Sweden, by the strait of Øresund. [custom_adv] Honolulu is the capital and largest city of the U.S. state of Hawaii. It is an unincorporated part of and the county seat of the City and County of Honolulu along the southeast coast of the island of Oʻahu. [custom_adv] Helsinki is located 80 kilometres (50 mi) north of Tallinn, Estonia, 400 km (250 mi) east of Stockholm, Sweden, and 300 km (190 mi) west of Saint Petersburg, Russia. It has close historical ties with these three cities. [custom_adv] Reykjavík is the capital and largest city of Iceland. It is located in southwestern Iceland, on the southern shore of Faxaflói bay. Its latitude is 64°08' N, making it the world's northernmost capital of a sovereign state. [custom_adv] Vienna is host to many major international organizations, including the United Nations, OPEC, and the OSCE. The city is located in the eastern part of Austria and is close to the borders of Czechia, Slovakia, and Hungary. [custom_adv] Geneva is a global city, a financial centre, and a worldwide centre for diplomacy due to the presence of numerous international organizations, including the headquarters of many agencies of the United Nations and the Red Cross. [custom_adv] The Curitiba Metropolitan area comprises 26 municipalities with a total population of over 3.2 million (IBGE estimate in 2010), making it the seventh most populous metropolitan area in the country. [custom_adv] Singapore's territory consists of one main island along with 62 other islets. Since independence, extensive land reclamation has increased its total size by 23% (130 square kilometres or 50 square miles). [custom_adv] Calgary's economy includes activity in the energy, financial services, film and television, transportation and logistics, technology, manufacturing, aerospace, health and wellness, retail, and tourism sectors. [custom_adv] Luxembourg is a landlocked microstate in western Europe. Its culture, people, and languages are highly intertwined with its neighbours, making it essentially a mixture of French and German cultures, as evident by the nation's three official languages: French, German, and the national language of Luxembourgish. [custom_adv] Kobe is the sixth-largest city in Japan and the capital city of Hyōgo Prefecture. It is located on the southern side of the main island of Honshū, on the north shore of Osaka Bay and about 30 km (19 mi) west of Osaka. [custom_adv] Nottingham is a city and unitary authority area in Nottinghamshire, England, 128 miles (206 km) north of London, 45 miles (72 km) northeast of Birmingham and 56 miles (90 km) southeast of Manchester, in the East Midlands. [custom_adv] Stockholm is the capital of Sweden and the most populous urban area in the Nordic countries; 965,232 people live in the municipality, approximately 1.6 million in the urban area, and 2.4 million in the metropolitan area. [custom_adv] As of 2018, Portland had an estimated population of 653,115, making it the 25th most populated city in the United States, and the second-most populous in the Pacific Northwest after Seattle. [custom_adv] The Brisbane central business district stands on the historic European settlement and is situated inside a peninsula of the Brisbane River, about 15 kilometres (9 miles) from its mouth at Moreton Bay, a bay of the Coral Sea. [custom_adv] Amsterdam is in the province of North Holland. Amsterdam is colloquially referred to as the "Venice of the North" due to its large number of canals which are a UNESCO World Heritage Site. [custom_adv] Toronto is an international centre of business, finance, arts, and culture, and is recognized as one of the most multicultural and cosmopolitan cities in the world. [custom_adv] Freiburg im Breisgau is a city in Baden-Württemberg, Germany, with a population of about 220,000. In the south-west of the country, it straddles the Dreisam river, at the foot of the Schlossberg.