This city is Denmark's capital and most populous city. The city has an estimated population of 805,402 as of January 1, 2022 (644,431 in Copenhagen Municipality, 103,608 in Frederiksberg Municipality, 42,723 in Trnby Municipality, and 14,640 in Dragr Municipality). It is the heart of Copenhagen's larger urban region (population 1,336,982) and the Copenhagen metropolitan area (population 2,057,142). Copenhagen is located on the eastern coast of Zealand; a portion of the city is located on Amager, and it is divided from Malmö, Sweden, by the resund strait.

Copenhagen has been on a long and difficult path toward zero pollution for more than 15 years. Their desire to breathe pure air drives their efforts to maintain their city clean. Copenhagen has been separated into several environmental zones, with areas receiving more pollution receiving more care, under the leadership of Environment Minister Troels Lund Poulsen.

Furthermore, the city has implemented many efforts to reduce air and environmental pollution. Particle filters are required on all diesel cars, as well as industrial plants with furnaces, to reduce hazardous emissions. The city of Copenhagen does an excellent job of not just keeping the streets clean but also ensuring that everyone in the city breathes fresh and quality air.

• Country: Denmark

Calgary is a city in Alberta, Canada's westernmost province. The city has 1,306,784 residents in 2021, with a metropolitan population of 1,481,806, making it Canada's third-largest city and fifth-largest metropolitan region.

Calgary is located in the south of the province, at the confluence of the Bow and Elbow Rivers, in the transitional area between the Rocky Mountain Foothills and the Canadian Prairies, about 80 kilometers (50 miles) east of the Canadian Rockies' front ranges, about 299 kilometers (186 miles) south of Edmonton, and about 240 kilometers (150 miles) north of the Canada–United States border. The city is located at the southern end of the Calgary–Edmonton Corridor, as defined by Statistics Canada.

Calgary is one of the seven cities in Canada that stands apart. While the rest of the cities stay spotless, Calgary comfortably wins the title of the second Cleanest Cities in the World. Yes, the streets are stylish, and the air is sharp, but so is the water. Visitors are permitted to drink water from the taps without fear of being exposed to contaminated water.

Calgary's officials have devised waste management systems to keep the city clean, despite its population of nearly a million people. This system contains a complex and sophisticated sewerage system as well as efficient garbage removal and recycling, among other things.

• Country:Canada

Oslo is Norway's capital and most populated city. It is a county as well as a municipality. In 2021, the municipality of Oslo had a population of 698,660 people, while the city's broader urban area had a population of 1,019,513 people in 2019, and the metropolitan area had a population of 1.71 million people in 2010.

Despite having a large number of active businesses, Oslo is one of the few cities in the world that has been able to keep emissions under control in order to retain the highest air quality. Another factor that has contributed to this city's inclusion on this list is its trash management efficiency.

You will see nothing but clean places wherever you go, whether it is in the lush green parks, lovely gardens, the lakeside, or the seaside. All of this is due to great waste disposal and management efforts.

• Country:Norway

Minneapolis is the county seat of Hennepin County in the U.S. state of Minnesota. Minneapolis, which has thirteen lakes, marshes, the Mississippi River, creeks, and waterfalls, has its roots in lumber and as the world's flour milling capital. It is located on both sides of the Mississippi River and is adjacent to Saint Paul, Minnesota's state capital.

Minneapolis is consistently regarded as one of the cleanest cities in the United States. It boasts the purest water, which is significant given the large population of people that live and work here at any given moment.

If proven guilty, the presence of litter and illegal dumping on one's property can result in heavy penalties or time in prison. Residents readily acknowledge and express their delight at how nicely the city's garbage management system has improved.

• Country: U.S.

After Kawasaki, Kobe is Japan's seventh-largest city, third-largest port city after Yokohama, and the capital of Hygo Prefecture. It is 30 kilometers (19 miles) west of Osaka, on the southern side of Honsh's main island, on the north shore of Osaka Bay. The city, together with Osaka and Kyoto, is part of the Keihanshin metropolitan area, which has a population of roughly 1.5 million people. Following the end of the policy of isolation in 1853, Kobe was one of the first cities to open for trade with the West, and it has since become regarded as a cosmopolitan and nuclear-free zone port city.

The city of Kobe in Japan is recognized for its high literacy and life expectancy statistics. Could it be, however, that the people who live here live longer and have a brighter outlook as a result of the clean atmosphere they share? To safeguard the city from flooding in the event of a storm, Kobe has a seamless sewerage system and a separate drainage system.

They have the best waste management systems and a well-connected road network that keeps traffic moving. This means less pollution of the air and environment.

• Country: Japan

Wellington is New Zealand's capital city. It is situated between Cook Strait and the Remutaka Range on the south-western tip of the North Island. Wellington is the administrative center of the Wellington Region and the country's second-largest city by metro area. It is the world's southernmost sovereign state capital. Wellington has a temperate marine climate and is the windiest city on the planet, according to average wind speed.

Wellington's pristine air and atmosphere can be attributed to the fact that it is a rural city with a substantially lower population. New Zealand experiences a large stream of visitors during peak seasons throughout the year due to its proximity to the sea. Despite this, it maintains a spick-and-span appearance because to its superior rubbish disposal systems.

Its museums, gardens, parks, and roadways are always spotless. The air quality is also good, thanks to the frequent winds that sweep through the city, removing all pollutants.

• Country: New Zealand

Helsinki is Finland's capital, primate, and most populated city. It is the seat of the region of Uusimaa in southern Finland, and has a population of 658,864. It is located on the beach of the Gulf of Finland. The city's urban area has a population of 1,268,296, making it Finland's most populous urban area and the country's most important center for politics, education, finance, culture, and research; Tampere in the Pirkanmaa region, located 179 kilometers (111 miles) north of Helsinki, is the country's second largest urban area. Helsinki lies 80 kilometers (50 miles) north of Tallinn, Estonia, 400 kilometers (250 miles) east of Stockholm, Sweden, and 300 kilometers (190 miles) west of St. Petersburg, Russia.

Helsinki is a beautiful city that almost seems too nice to be true. You'll learn about the town's history, and if you look closely, you'll notice that the residents' behaviors are what contribute to the town's cleanliness.

The city is working hard to develop clean energy. Cleaner fuels for autos and home heating systems are also promoted by local authorities. It's no surprise that, in addition to being the cleanest, Helsinki has some of the best air quality.

• Country: Finland

Honolulu is the capital and largest city of the Pacific Ocean-bound United States state of Hawaii yet among Cleanest Cities in the World. It is the westernmost and southernmost major U.S. city, located along the southwest coast of the island of Oahu,[a] and is the unincorporated county seat of the consolidated City and County of Honolulu.

Honolulu is Hawaii's principal international gateway. In both the state and Oceania, it is also a key center for business, banking, hospitality, and military defense. As reflected in its unique population, food, and traditions, the city is distinguished by a combination of Asian, Western, and Pacific cultures.

When you think of Honolulu, you think of gentle breezes, bright flowers, and a beautiful landscape. Another thing you'll remember about this Hawaiian metropolis is that it's as clean as any other city you've ever visited.

The volcanic rocks beneath the surface filter the water naturally. The air quality isn't as awful, but it's hampered by volcanic haze, which, if left unchecked, might have negative health consequences.

• Country: U.S

With an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km2 (41 sq mi), Paris is the 34th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centers of finance, diplomacy, commerce, fashion, gastronomy, science, and the arts, and has been referred to as the capital of the world. The City of Paris is the administrative center and seat of government of the Île-de-France region and province, or Paris Region, which has an estimated population of 12,997,058 in 2020, or about 18 percent of France's population, making it the second largest metropolitan area in the OECD in 2020 and the 14th largest in the world in 2015.

When it comes to tourism, food, and fashion, France is one of the established cities in the world that can make significant statements. Its appeal stems primarily from the cleanliness of the city's streets, landmarks, museums, and parks.

France's traffic is well-managed, the roads are cleaned on a daily basis, and rubbish disposal is efficient.

• Country:France

It is one of Asia's busiest and most modern cities, yet it is also one of the Cleanest Cities in the World. The government has strong legislation in place to help support and keep the city immaculate in order to preserve its high status as a top tier city. Without permission from the authorities, you cannot uproot or cut down a tree. If you are detected littering, you will also be arrested.

It turns out that maintaining a city clean is a collaborative effort between residents and government officials. The eleven cities represented here have collaborated to provide a clean and safe environment for all. Any of these cities would be ideal for you if you were looking for a clean city to visit on your next vacation or if you wanted to relocate.

• Country:Singapore