Why is tiny Luxembourg so important to Europe?

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This is the script for my video posted on July 22, 2026. Watch it on TikTok.

Even if you’ve heard of Luxembourg, you probably don’t know much about it. It may be a tiny landlocked country, but today it has the highest GDP per capita in the world thanks to a financial sector that is both its greatest asset and its most critical vulnerability. It’s also hugely important in European politics. So how did Luxembourg become so disproportionately wealthy and influential, and how does this affect the country’s geopolitical dynamics?

We can trace Luxembourg’s existence back to 963 CE, when Siegfried, a count in the forest of Ardennes, acquired a rocky promontory called the Bock and built his castle there. Its location overlooking the Alzette River made it a formidable fortress.

In 1244, the burg was granted city status by charter, and as foreign powers like the Spanish, the French, and the Austrians took control of the region over the following centuries, each of them fortified it even further. Notably, in all its centuries the fortress was taken by direct assault only once, in a surprise night attack in 1443. Every other conqueror had to starve it out.

It became known as the best fortress in the world after Gibraltar. Strategically, it controlled the border zone between France and Germany and access to the Left Bank of the Rhine River.

For hundreds of years the region of Luxembourg was controlled by Germanic nobles under the Holy Roman Empire, with several members of the House of Luxembourg actually becoming kings of Bohemia, Catholic archbishops, and even Holy Roman Emperor.

In 1354, Luxembourg was elevated from a simple county to the status of Duchy, as a gift from Emperor Charles IV to his half-brother Wenceslaus.

But the Duchy of Luxembourg wasn’t always as small as it is today. It shrank from about 10700 square km to today’s roughly 2600 thanks to three different partitions made between 1659 and 1839.

In 1659, the Spanish Habsburgs, who had controlled Luxembourg since they inherited it in 1556, signed the Treaty of the Pyrenees to end the Franco-Spanish War, and they transferred huge amounts of territory to France, including parts of Luxembourg.

Then Napoleon’s defeat led to the Congress of Vienna in 1814 and 1815, whose diplomatic meetings negotiated the resizing of mainland Europe’s great powers to achieve lasting peace. This was a radical shakeup that saw a lot of territorial trading and concessions.

One of these was that William, the Prince of Orange-Nassau, would cede his German Nassau lands to Prussia, and in return he would become both the first King of the Netherlands and the first Grand Duke of Luxembourg, as William the First, with the two countries separate but ruled in personal union. Luxembourg has been a Grand Duchy ever since.

Then the Belgian Revolution of 1830 saw most of Luxembourg side with the rebels against Dutch rule, and to settle the conflict, the major European powers split the country again in 1839, giving its larger, mostly French-speaking western portion to Belgium.

History accelerated pretty quickly from that point forward. When the German Confederation was dissolved in 1866, Napoleon III attempted to buy Luxembourg from William III, and Prussia, whose military still garrisoned Luxembourg’s capital, objected, nearly triggering a Franco-Prussian War.

The 1867 Treaty of London resolved it and led Prussia to withdraw its garrison. The famous fortress on the Bock was dismantled over decades, and the Grand Duchy was declared perpetually neutral under a collective guarantee from Europe’s great powers. This mattered when Germany invaded the country in 1914.

But before we get there, we should note that the personal union of the Netherlands and Luxembourg ended in 1890 when William III died. His daughter succeeded him in the Netherlands, but Luxembourg required male succession, so the throne passed to a distant cousin, Adolphe of Nassau, founding the independent Luxembourg-Nassau dynasty that rules to this day.

Germany occupied Luxembourg in both world wars despite its neutrality. In WWII, they ran an aggressive Germanization campaign and forcibly conscripted Luxembourger men into the Wehrmacht, leading to a general strike that disrupted the country’s steel output and martial law. Luxembourg was on the front line of the Battle of the Bulge and lost about 2% of its population, among the heaviest proportional losses in Western Europe, and the wars ultimately led the country to abandon neutrality.

From the mid-19th century on, steel became a pillar in Luxembourg’s transformation into an economic power, largely because of its vast supply of iron ore. At one point Luxembourg’s per-capita steel output was the highest in the world, though today it only accounts for about 2% of Luxembourg’s economic value.

In the mid-20th century, meanwhile, the country adapted its laws to attract global money and move away from its reliance on steel via low taxes and flexible rules that allowed international money to be stored there without being penalized. In 1963 it listed the first Eurobond, which is a bond issued in a currency other than the issuer’s home currency, making it a pioneer in global lending. It was a founding member of the European institutions that became the EU, starting with the Coal and Steel Community in the 1950s, which bound its giant neighbors into cooperation and gave its economy easy access to a huge common market. And all of this allowed Luxembourg to become the second largest hub for investment funds in the world.

This model has a dark side, though. Luxembourg spent decades as a target of tax haven criticism, most famously in the 2014 LuxLeaks scandal, which exposed secret tax deals with hundreds of multinationals, and the country only ended banking secrecy in 2015 under international pressure.

Additionally, its rapid population growth, heavy integration with neighboring countries, and other factors have produced acute housing shortages, some of Europe’s highest home prices, and inequality to the point that about 21% of people are at risk of poverty or social exclusion.

Today the country is trying to diversify, because it realizes that the volatility of financial markets could have a dangerous impact on its stability. The satellite firm SES was founded in Luxembourg in 1985 and is one of the world’s largest commercial satellite operators. Building on this, in 2017 Luxembourg became the first European country to grant companies ownership of resources extracted in space as well, extending even to foreign companies with a Luxembourg office.

Luxembourg City is also one of the EU’s three capitals alongside Brussels and Strasbourg, hosting the EU’s Court of Justice, the General Court, the European Court of Auditors, the European Investment Bank, the Secretariat of the European Parliament, and several European Commission departments.

Luxembourg has always been a focal point for geopolitics. The Schengen Agreement was signed there, it brokered the compromise that ended the Empty Chair Crisis in 1966 after France had boycotted the European Economic Community, and three European Commission presidents have been Luxembourgers.

The population is only about 690k, the majority of whom were born in another country, though there are over 200k cross-border workers as well who commute in from Germany, France, and Belgium. The combination of massive financial output and a small population leads to a GDP per capita of about 147k euros per year, the highest in the world.

Luxembourg’s military, however, is incredibly small, with just over 1100 personnel, the smallest in NATO. It consequently contributes niche capabilities to the alliance, including air refueling missions and contributions to satellite and intelligence projects. Interestingly, it also measures its financial commitment to NATO against its gross national income, or GNI, rather than its GDP, because its GDP is inflated by foreign workers.

Luxembourg lost most of its territory to its neighbors, and now it relies on those neighbors for defense. It has been incredibly deliberate in its effort to integrate with the rest of Europe while making itself highly attractive for investment. But its very nature as a small, landlocked state means that in many ways its own fate is out of its hands.

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