A Country Within a City Within a Country

Vatican City is the world's only country nestled entirely inside a single city — Rome, Italy. You're looking at just 121 acres, home to 882 residents who pay zero taxes and shop duty-free. It became an independent state through the 1929 Lateran Treaty, and its leader, the Pope, holds full legislative, executive, and judicial authority. It's one of three fully enclaved nations on Earth, and there's far more to this story than you'd expect.

Key Takeaways

• Vatican City, a sovereign microstate inside Rome, Italy, covers just 44 hectares — roughly one-eighth the size of Central Park.
• Only 882 people reside within Vatican City, yet it maintains diplomatic relations with over 177 nations worldwide.
• The Pope holds complete legislative, executive, and judicial authority over Vatican City's government.
• Vatican City residents pay no taxes and purchase goods duty-free within its self-contained borders.
• The 1929 Lateran Treaty formally established Vatican City as an independent state, resolving decades of political conflict with Italy.

How Can a Country Exist Inside a City Inside Another Country?

When you think of a country, you picture defined borders separating it from neighboring nations—but what happens when an entire nation sits completely inside another country's borders, with no land connecting it to the outside world? That's exactly what an enclave is.

Unlike landlocked countries, which access multiple neighbors for trade, an enclave depends entirely on one surrounding nation. Municipal sovereignty becomes complicated when your country relies on a single neighbor for commerce, utilities, and emergency services. Transit agreements with the host nation aren't optional—they're essential for survival.

Three sovereign nations currently exist as enclaves: Lesotho inside South Africa, San Marino inside Italy, and Vatican City inside Rome. Each maintains independent governance while navigating the geographic reality of complete encirclement by a single country. The term "enclave" itself derives from the French word enclaver, first appearing in use during the mid-15th century with origins in colloquial Latin.

This geographic dependence can carry serious political consequences—during the apartheid era, Lesotho was unable to fully embargo South Africa despite deep opposition to the regime, because its own survival depended on the very nation it sought to isolate.

San Marino, one of the most notable enclaves, is also considered the world's oldest republic, having been founded in 301 AD by a Christian stonemason named Marinus on the peaks of Mount Titano in the Apennine Mountains.

Vatican City: The World's Smallest Sovereign State

Tucked inside Rome, Vatican City covers just 44 hectares—making it the world's smallest sovereign state. You can walk its entire stone-walled perimeter in just 40 minutes. Despite its tiny footprint, this religious microstate packs an extraordinary amount of history, governance, and culture into its 0.44 square kilometers.

The 1929 Lateran Treaty formally established Vatican City as an independent state, giving the pope absolute authority as its ruler. It's also the administrative heart of the Catholic Church worldwide.

Beyond politics, you'll find some of the world's most remarkable artistic treasures here—Michelangelo's Sistine Chapel ceiling, the Pietà, and vast Vatican Museums stretching nine miles. UNESCO recognized this concentration of significance by designating Vatican City a World Heritage site in 1984. Beneath the grandeur of Saint Peter's Basilica lies an ancient chariot-racing circus, constructed during the reigns of Caligula and Nero, where the central obelisk now standing in Saint Peter's Square once served as part of the track's central barrier. To sustain its operations, Vatican City relies on revenue from donations from Roman Catholics worldwide, museum entrance fees, and the sale of books, stamps, coins, and souvenirs. Much of this funding comes from worldwide Catholic donations channeled through local churches across the globe. In contrast to Vatican City's ancient governance structures, Reykjavik is home to the Althing, widely regarded as the oldest surviving parliament in the world, founded in 930 AD.

How Vatican City Ended Up Enclosed Within Rome

Vatican City's enclosure within Rome wasn't planned—it evolved over two millennia of religious ambition, political conflict, and negotiated compromise.

Tracing Vatican origins back to ancient Rome, you'll find a flood-prone marshland called Ager Vaticanus, eventually transformed into Caligula and Nero's circus, where St. Peter was martyred.

Constantine built a basilica over Peter's tomb in the 4th century, anchoring Christianity there permanently.

Pope Leo IV reinforced the area by constructing the Leonine walls between 847 and 855 AD, physically separating Vatican grounds from Rome.

When Italy unified and seized Rome in 1870, popes refused to surrender their claim. That standoff lasted until 1929, when the Lateran Treaty formally established Vatican City as a sovereign state enclosed entirely within Rome's boundaries. The treaty was negotiated with Mussolini's Italy, finally resolving the decades-long Roman Question over papal sovereignty and territorial authority.

During the turbulent years of World War II, Vatican City maintained strict wartime neutrality under Pope Pius XII, keeping the tiny state unoccupied while conflict raged across Europe.

Much like the debate over the Elgin Marbles repatriation, questions of cultural sovereignty and territorial identity often take decades—or even centuries—of negotiation before reaching any formal resolution.

The Diplomatic Powers That Make Vatican City Sovereign

Despite measuring less than half a square kilometer, Vatican City wields diplomatic influence that rivals far larger nations. The Holy See maintains formal diplomatic relations with 177 nations, handling everything from treaty making to nuncio appointments with the same legal weight as any recognized state.

When you examine its structure, the Pope holds full legislative, executive, and judicial authority, while the Secretariat of State manages foreign relations directly.

Vatican diplomats enjoy diplomatic immunity under international law, and envoy accreditation follows the Vienna Convention's established protocols. Remarkably, the Holy See conducted diplomacy even before 1929, operating without any territorial base whatsoever.

Its sovereignty isn't just ceremonial — it's confirmed through centuries of tradition, active treaty obligations, and engagement with mainly Muslim nations, the Russian Federation, and the Organization for the Liberation of Palestine. The foundation of this sovereignty traces back to the Lateran Treaty, signed on 11 February 1929, which formally created Vatican City State as the territorial base for the Holy See's continued international presence.

During the critical interregnum period between 1870 and 1929, the Holy See negotiated 62 concordats with secular authorities, redefining Church power and centralizing authority in the pope even while lacking any sovereign territory of its own.

The Pope's Role in Governing Vatican City

Within Vatican City's borders, the Pope holds absolute power — legislative, executive, and judicial — making him one of Europe's last true monarchs, though especially the role isn't hereditary. His papal sovereignty stems directly from his position as Bishop of Rome.

For ecclesiastical administration, he delegates legislative duties to the Pontifical Commission, a group of cardinals he appoints for five-year terms. Still, their acts require his approval through the Secretariat of State.

The Commission's president also heads the Governorate, handling executive functions like health, security, and telecommunications.

If the Pope dies, the Cardinal Camerlengo temporarily assumes his temporal duties until a new pope is elected, though major decisions still require the full College of Cardinals' approval. You'll find no other governance structure quite like it. This unique arrangement exists because Vatican City itself was only formally established when the Lateran Treaty was signed on 11 February 1929 between the Holy See and the Kingdom of Italy.

Beyond governance, the Pope's influence extends far beyond Vatican City's walls, as he leads the world's largest non-government provider of education and health care, overseeing a vast global network of charitable institutions.

Life Inside Vatican City's 121 Acres

Tucked behind ancient stone walls, Vatican City packs an astonishing amount of life into just 121 acres — roughly one-eighth the size of New York's Central Park.

Resident routines unfold across a surprisingly self-contained world. Here's what daily life looks like:

• No taxes exist, and residents purchase goods duty-free
• Garden maintenance covers 23 hectares of Renaissance and Baroque fountains and sculptures
• 882 residents call this the world's smallest sovereign state home
• Stone walls on the north, south, and west sides define the boundaries of everyday movement

You'd find scholars accessing 1.1 million printed books at the Vatican Apostolic Library, established in 1475.

Every corner of this compact territory serves a distinct purpose, making it unlike any other place on Earth. The Lateran Treaty of 1929 formally established Vatican City as an independent sovereign state, guaranteeing papal sovereignty following centuries of territorial loss during Italian unification. Vatican City maintains diplomatic relations with over 180 countries through its representative entity, the Holy See, extending its global influence far beyond its modest 121 acres.

How Vatican City and Italy Coexist as Neighbors

The relationship between Vatican City and Italy didn't happen by accident — it was forged on February 11, 1929, when Benito Mussolini and Cardinal Gasparri signed the Lateran Accords on behalf of the Italian government and Pope Pius XI respectively. This agreement resolved 60 years of hostility following Italy's 1870 annexation of Rome, formally recognizing Vatican City's independence and sovereignty.

The border dynamics between both nations reflect a carefully negotiated balance. Italy granted legal immunities to key ecclesiastical sites, including the Lateran Basilica and Castel Gandolfo, while recognizing religious marriages as legally equivalent to civil unions. Italy also exempts Vatican-owned properties from taxation. In return, the Pope pledged perpetual neutrality in international affairs — a coexistence built on mutual compromise rather than mere proximity. To further cement this new era of cooperation, Mussolini commissioned the construction of Via della Conciliazione, a grand boulevard symbolically linking Vatican City with the heart of Rome.

Despite the hard-won peace established by the Lateran Treaty, the preceding decades had been marked by deep animosity, during which popes endured the status of prisoner of the Vatican, refusing to recognize the Law of Guarantees and declining to acknowledge the legitimacy of the Italian state.

Lesotho and San Marino: The Other Sovereign Enclaves

Vatican City isn't the only country swallowed whole by another — two other sovereign enclaves exist on opposite sides of the world, each with its own distinct story.

Lesotho sits entirely within South Africa, covering 30,355 sq km, while San Marino nestles inside Italy at just 61 sq km. Their landlocked identity shapes everything from trade to diplomacy.

Here's what makes each unique through enclave diplomacy:

• Lesotho formed in 1824; San Marino in 301 AD
• Lesotho ranks 23rd poorest; San Marino ranks 8th richest
• Lesotho houses 2.3 million people; San Marino just 33,562
• Lesotho explored economic integration with South Africa; San Marino relies on Italy for defense

You're looking at two enclaves separated by wealth, history, and geography — yet bound by the same political reality. Lesotho's terrain is defined by the Maloti Mountains, making it home to the highest peak in all of Southern Africa. Together with Vatican City, they form three enclave countries recognized globally, each entirely surrounded by one or two neighbouring sovereign states.

Why the World Still Recognizes These Surrounded Nations

Being surrounded by another country doesn't erase your sovereignty — and that's the core principle driving global recognition of enclaves like Vatican City, Lesotho, and San Marino. International law doesn't measure legitimacy by size or geography. It measures it by control.

When you examine why these nations retain recognition, you'll find two anchors: historical legitimacy and international precedent. Vatican City's 1929 Lateran Treaty didn't just settle a dispute — it set a standard. Treaties like it established that full territorial control qualifies a surrounded nation as sovereign, regardless of enclosure.

Over 180 countries maintain diplomatic relations with Vatican City alone. That's not sentiment — it's legal consistency. The world recognizes these nations because the agreements that created them still hold, and international law honors what history established. Lesotho, for example, is entirely surrounded by South Africa, making it a landlocked sovereign enclave that borders three of the country's provinces.

Lesotho is also one of three fully enclaved sovereign nations in the world, sharing that distinction with Vatican City and San Marino — a rare category that underscores just how exceptional these surrounded states truly are.