European Capitals

Explanation: Amsterdam is the constitutional capital of the Netherlands, although the government sits in The Hague. Many people confuse the two cities.

Explanation: The Hague is the seat of government, Parliament, and the International Court of Justice, although Amsterdam is the official capital.

Explanation: Switzerland has no de jure capital. Bern is designated as the 'federal city' (Bundesstadt), seat of the government and Federal Parliament.

Explanation: Istanbul (formerly Constantinople) was the capital of the Byzantine and then Ottoman Empires. In 1923, Mustafa Kemal Atatürk moved the capital to Ankara.

Explanation: Bonn was the capital of the Federal Republic of Germany (West Germany) from 1949 to 1990. After reunification, Berlin became the capital of unified Germany again.

Explanation: Krakow was the capital of Poland from 1038 to 1596. Wawel Royal Castle, the former residence of Polish kings, is its symbol.

Explanation: Warsaw was systematically destroyed by the Nazis in 1944. Its old town was meticulously rebuilt and is a UNESCO World Heritage Site.

Explanation: The Danube flows through four capitals: Vienna (Austria), Bratislava (Slovakia), Budapest (Hungary), and Belgrade (Serbia). It's the only river in the world to flow through so many capitals.

Explanation: Luxembourg is both the name of the country (Grand Duchy of Luxembourg) and its capital (Luxembourg City). Monaco and San Marino also share this trait.

Explanation: Liechtenstein's capital is Vaduz, unlike Monaco, San Marino, and Luxembourg whose capitals share the country's name.

Explanation: Reykjavik, at 64°08' north latitude, is the northernmost capital in Europe and in the world. It sits just below the Arctic Circle.

Explanation: In 1923, Mustafa Kemal Atatürk chose Ankara as the new capital to mark the break from the Ottoman Empire and its capital Istanbul.

Explanation: Nicosia (Cyprus) has been divided since 1974 between the Republic of Cyprus in the south and the Turkish Republic of Northern Cyprus. A UN buffer zone separates them.

Explanation: Oslo was called Christiania (or Kristiania) from 1624 to 1925, named after King Christian IV of Denmark who rebuilt the city after a fire.

Explanation: In Switzerland, Bern (~135,000) is much smaller than Zurich (~420,000). This is also the case in Turkey (Ankara vs Istanbul).

Explanation: Vatican City, with 0.44 km² and about 800 inhabitants, is the smallest sovereign state in the world. It is the seat of the Catholic Church and the pope's residence.

Explanation: Belgrade, capital of Serbia, is located at the confluence of the Danube and Sava rivers. This strategic position made it one of the most contested cities in history.

Explanation: Saint Petersburg was renamed Petrograd in 1914 (to remove the German-sounding name), then Leningrad in 1924 upon Lenin's death, before reverting to its original name in 1991.

Explanation: Athens has been inhabited for at least 3,400 years and is considered the oldest European capital still in use. It is the birthplace of democracy and philosophy.

Explanation: Vatican City is entirely enclosed within Rome, making them the closest capitals in the world (distance 0). Vienna and Bratislava (55 km) are the closest non-enclave capitals in Europe.