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Hum, Croatia -

A prime example of the blurry distinction between town and city, the settlement of Hum in Croatia is either the smallest city in the world or the smallest town in the world, depending on who you ask. Either way, it's a scenic place that's home to around 30 (yes, 30!) people.

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Adamstown, Pitcairn Islands (British Overseas Territory) -

Staking a claim to be the world's least-populated capital city, Adamstown is the largest—and the only—settlement in a crop of South Pacific Islands inhabited by around 50 people. A British Overseas Territory, the islands are inhabited by the descendants of mutineers aboard the HMS Bounty, British ship that docked here in 1790.

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Durbuy, Belgium -

The medieval settlement of Durbuy in Belgium is another place that jostles for the title of world's smallest city. Awarded city status in 1331 by King John of Bohemia, its 400 permanent residents are outnumbered by curious tourists for much of the year.

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Vatican City -

Encircled by Rome, Vatican City can lay claim to the title of world's smallest country as well as the world's smallest city. As the headquarters of the Roman Catholic Church, the 0.17-square mile (0.44 square km) city-state is famously home to the Pope, along with around 800 other residents.

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Valletta, Malta -

The Maltese capital's stunning Baroque architecture makes it a major tourist draw, and the entire city was declared a UNESCO World Heritage Site in 1980. Founded in the 1500s, the tiny capital has a population of around 6,000.

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City of London, England -

No, that's not a mistake. London may be home to millions, but the City of London is a small city within a huge city. Its boundaries have remained the same since the medieval period, and the 1.12 square mile (2.9 square km) settlement still retains city status, along with its own police force.

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San Marino, San Marino -

Sitting pretty on a mountainside in the microstate of San Marino, the city of the same name is surrounded by the northern Italian regions of Emilia-Romagna and Marche. With a population of just over 4,000, the scenic medieval settlement spans 2.74 square miles (7.09 square km).

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Horta, Portugal -

The Portuguese archipelago of Azores sits windswept and isolated in the middle of the Atlantic Ocean, and some of the scenic islands have more cows than people! As capital of Faial Island, Horta has a population of around 7,000 (not counting cattle).

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Castries, Saint Lucia -

Another island capital, Castries is the bustling center of Saint Lucia in the Caribbean. Its population of around 22,110 is considerably boosted by tourists as well as visitors from outlying villages.

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Belmopan, Belize -

With around 20,000 residents, Belmopan is a fast-growing city, but is still the smallest capital in the Americas in terms of population. It's a relatively new settlement, too, built after much of former capital Belize City was destroyed by Hurricane Hattie in 1961.

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Bronkhorst, The Netherlands -

The tiny Dutch settlement might have a population of not much more than 150, but Bronkhorst is technically a city. Thought to have been settled since around the 7th century, Bronkhurst was granted city status in the 1400s, although a walking tour of the 'city' would take just a few minutes.

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Cockburn Town, Turks and Caicos (British Overseas Territory) -

A town in name only, Cockburn Town is capital of the Turks and Caicos archipelago, a British Overseas Territory that lies between the Bahamas and the Dominican Republic. The seat of government for the islands since 1766, Cockburn Town has a population of less than 3,750.

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Fuvahmulah City, Maldives -

Both an island and a municipality, Fuvahmulah gained city status in 2016. But with a population of just over 11,000, there's still a friendly small-town vibe, and plenty of elbow room on the beaches.

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Fagernes, Norway -

With a population of less than 2,000, Fagernes in south-central Norway is rightly proud of the city status it gained in 2007. A popular starting point for outdoor types setting off to explore the region's skiing and cycling opportunities, Fagernes was declared a city by the local authorities to coincide with its 150th anniversary.

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Montpelier, USA -

The smallest state capital in the United States, Montpelier in Vermont has a population of around 8,000. It's a picturesque spot filled with handsome 1800s architecture, and earned its capital status in 1805 on account of its central location and good road and rail potential.

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Miranda do Douro, Portugal -

Overlooking the Douro River in the heart of Portuguese wine country, Miranda do Douro is a fortified city whose population barely passes 2,000 people. The Catholic authorities established a diocese here in 1545, and the 17th-century cathedral remains an attraction.

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Kuressaare, Estonia -

A small city with a storied history, Kurassaare was known as Kingissepa during the Soviet era, and became a city under Danish rule in 1563. Today, it's known for its spas and mineral water—the World Health Organization actually named it a Healthy City in 1998.

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Kastoria, Greece -

The beautiful city of Kastoria in northern Greece thrived as a center of the fur trade during the Byzantine era. Although demand for fur has diminished, the city, which has a population of around 13,400, retains a sense of its early grandeur.

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Hamilton, Bermuda (British Overseas Territory) -

Founded in 1793 and made capital of Bermuda in 1815, tiny Hamilton has a population of less than 1,000. Despite its small stature, it has officially held city status since 1897.

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Victoria, Seychelles -

It might be the largest and most populous settlement in the picturesque Seychelles archipelago in the Indian Ocean, but Victoria is still one of the smallest capital cities in the world. It’s situated on the north-eastern side of Mahé, the archipelago's main island, and, with around 26,500 inhabitants, is home to roughly a third of the Seychelles' population.

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Fürstenau, Switzerland -

With a population of around 350, the tiny Swiss settlement of Fürstenau still holds the city rights it was given in 1354, on account of the fact that a bishop had a summer residence here.

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Saint Peter Port, Guernsey (Channel Islands) -

British Crown Dependencies off the coast of France, the islands of Jersey and Guernsey are scenic, sedate places to call home. Guernsey's capital, Saint Peter Port, has a population of around 17,000, and is the closest the islands get to a bustling metropolis.

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Nuuk, Greenland (Danish Realm) -

The capital of Greenland, Nuuk is also its largest city and seat of government. With a population of only 18,800, Nuuk actually accounts for almost a third of Greenland's entire population.

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Nakhon Nayok, Thailand -

The only major settlement in the province that shares its name, the city of Nakhon Nayok has a population of around 16,000. It's the capital of the region, and attracts out-of-towners with its beautiful waterfalls, parks, and temples.

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Jericho, Palestine -

As well as being among the world's smallest cities, the West Bank municipality of Jericho can also claim to be the world's lowest. Its roughly 20,000 inhabitants live at 258 meters (846 ft) below sea level.

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Kilkenny, Ireland -

The medieval city of Kilkenny in southeast Ireland is a small city that packs a punch in terms of grand buildings of religious and historical importance. The population of around 27,000 is boosted each year by tourists visiting the city's castle, cathedral, and well-preserved churches and monasteries.

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Vaduz, Lichtenstein -

Many people would have trouble pinpointing Lichtenstein on a map. The tiny Alpine principality lies between Austria and Switzerland, and is only 15.5 miles (25 km) long. The capital, Vaduz, has a population of under 6,000.

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Tórshavn, Faroe Islands (Danish Realm) -

Sitting in the North Sea between Iceland, Scotland, and Norway, the self-governing Faroe Islands are under Danish rule. The waterside capital is a buzzing place full of shops and highly-regarded restaurants, even though the population was under 14,000 at last count.

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Saint David's, Wales -

With a population of less than 1,500, Saint David's is the smallest city in the UK. Named for the Welsh patron saint, who was born nearby and was buried at a monastery he founded on the site that later became Saint David’s, the settlement was deemed a city due to the fact that it had a cathedral. But it lost its city status in 1888, with the abolition of a 16th-century rule stating that any settlement with a cathedral was automatically a city. Queen Elizabeth II restored the title in 1994, however, and today Saint David’s wears its city status with pride.

Sources: (24/7 Wall St.) (BBC) (This Big City) 

See also: Curious countries that changed their capital cities

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