1. Iceland
   Hungary
2. Norway
   Ukraine

There is a seriously slow construction project happening at Buda Castle in Budapest, Hungary. Work began on this structure in the 13th century, with renovations and remodels continuing even today.

1. Romania
   Estonia
2. Georgia
   Slovenia

Construction on Transylvania's Bran Castle in Romania began in the 12th century. Unlike many castles, famous for who lived there, this one is more famous for who didn't: Dracula. Author Bram Stoker modeled Dracula's castle after the Romanian structure.

1. Serbia
   Belarus
2. Switzerland
   Germany

Neuschwanstein Castle in Germany is a romantic, fairytale-like structure, so it only stands to reason that Walt Disney would be compelled to model one of his Disney Princesses' castles after it. The real deal is located in Bavaria, Germany.

1. Sweden
   Malta
2. Bulgaria
   Portugal

The Castle of Ravadinovo is Bulgaria's No. 1 tourist attraction. It was designed from a childhood dream by architect George Tumpalov. It's just a baby, though, compared to others in this quiz – construction on it didn't begin until 1996.

1. Estonia
   United Kingdom
2. Denmark
   Finland

In addition to its murder mystery dinner nights, Laiuse Castle in Estonia is also a popular site for weddings and other events. Constructed in the late 1800s, this castle also contains a hotel and a restaurant onsite.

1. Cyprus
   Slovakia
2. France
   Greece

Slovakia's Bojnice Castle was originally constructed from wood and later changed into a stone creation, which probably contributes to its longevity. It currently houses an art and history museum and plays host to the International Festival of Ghosts and Spirits. Spooky!

1. Latvia
   Scotland
2. Luxembourg
   Spain

Vianden Castle, situated in Luxembourg, was built on the site of a former Roman castle and changed hands several times, which caused it to fall into a state of disrepair for a bit. New owners finally restored the ancient structure.

1. San Marino
   Cyprus
2. Turkey
   Ireland

Built in the 19th century, Kylemore Abbey (formerly Kylemore Castle) is home to Benedictine monks in Ireland. At the time it was built, the owner wanted a castle with "modern" amenities, which we're certain have changed over the past 100 years or so.

1. Kazakhstan
   Belarus
2. Poland
   Moldova

Nesvizh Castle in Belarus has seen its share of conflict. The Radziwiłł family was expelled from it not once, but twice. The first time was in 1772 and the second happened 167 years later during the invasion of Poland.

1. Vatican City
   Denmark
2. Italy
   Croatia

Croatia's Trakošćan Castle was first constructed in the 13th century as a way to stand guard over a nearby road. Today it houses a museum that includes an exhibit dedicated to the country's nobility.

1. Liechtenstein
   Monaco
2. Norway
   Azerbaijan

Norway's Akershus Castle was built in 1299, and it has been busy ever since, serving as a protective fortress, a royal home and now, a museum and public destination for concerts and holiday events.

1. Iceland
   Lithuania
2. Poland
   Hungary

Moszna Castle, located in Poland, is big in every aspect of the word. Covering a spread the size of 14 football fields, the castle has more than 360 rooms and was replicated (in part) at Walt Disney World's Epcot.

1. France
   Germany
2. Italy
   Ireland

It's true that Vatican City is a country enclosed inside Italy, and Castel Sant’Angelo can be found a short distance away in Rome. What started as a tomb has since served as a prison, home and museum.

1. Bosnia and Herzegovina
   Kosovo
2. Turkey
   Lithuania

Lithuania is home to Trakai Island Castle, a tourist attraction in the Baltic state. It is accessible via a walking path where you can observe the stone fortress that was built in the 1400s.

1. Ukraine
   Denmark
2. Latvia
   Czechia

Denmark is home to Egeskov Castle, so named for the forest of trees that are believed to have been necessary for the structure's foundation. The name "Egeskov," which means oak woods in Danish, was the perfect choice.

1. Portugal
   Finland
2. United Kingdom
   Scotland

Travel to Edinburgh, Scotland, and you won't be able to avoid views of Edinburgh Castle. It sits upon the elevated Castle Rock and dominates the skyline from various viewpoints. Edinburgh Castle has been under construction in some capacity since the 12th century.

1. Liechtenstein
   Bulgaria
2. Slovenia
   Russia

Predjama Castle in Slovenia is unlike any other castle in this quiz, since it's built into the side of a mountain at the mouth of a cave. The castle is roughly 800 years old, but the cave system is likely much older.

1. Switzerland
   Portugal
2. Croatia
   Germany

One of Portugal's most popular tourist attractions, Pena Palace in Sintra, Portugal, was believed to have been build after a vision of Virgin Mary appeared to King Ferdinand II. The exterior of the castle boasts varying architectural styles.

1. Sweden
   England
2. Scotland
   Serbia

If you're looking for both the largest and the oldest occupied castle structure in the world, look no further than Windsor Castle in England. British royals for 1,000 years have called the castle home.

1. Greece
   France
2. Italy
   Switzerland

If you want to see Tourbillon Castle (and not from a distance), you'll need to be prepared to climb a hefty number of steep and winding stairs at its location in Switzerland. You'll be rewarded with awesome views of Sion, though, the city where it's located.

1. Sweden
   Norway
2. Iceland
   Turkey

Sweden's Örebro Castle was built to provide a watch post for activity around the River Svartån. Its name is also derived from the river; more specifically, the word "ör," which are small stones found in the riverbed.

1. Romania
   Finland
2. Netherlands
   Georgia

According to a website maintained about the Netherlands' De Haar Castle, one-time socialite and fashion designer Coco Chanel was a guest at this structure, whose history dates back to 1892.

1. Iceland
   Turkey
2. Czech Republic (Czechia)
   San Marino

Prague Castle in the Czech Republic (Czechia) is a world record holder. According to "Guinness Book of World Records, it is the biggest ancient castle in the entire world, occupying a paltry 750,000 square feet.

1. Germany
   Switzerland
2. Austria
   France

Hohenwerfen Castle does, indeed, make a cameo appearance in the 1965 movie musical, "The Sound of Music." The castle is perched on a cliff overlooking Werfen, Austria, where it has stood for more than 900 years.

1. Kazakhstan
   Netherlands
2. Greece
   Latvia

Methoni Castle in Greece is certainly located in one of the more visually-stunning locations, overlooking the Ionian Sea. You'll have to travel across a stone bridge that features 14 archways to get across the moat, however.

1. Albania
   Romania
2. Malta
   Andorra

Krujë Castle in Albania is well-known by locals for the role it played in Skanderbeg's battle against the Ottomans. The castle was able to withstand the Ottomans' siege and today houses a museum honoring Albania's national hero, Gjergj Kastrioti Skënderbej.

1. Poland
   North Macedonia
2. United Kingdom
   Lithuania

Located in the United Kingdom (Wales, to be specific), Conwy Castle's construction totals nearly a mile of walls as well as more than 20 towers and gatehouses. The castle was part of a one-time plan to encase all of Wales in a system of walls.

1. Netherlands
   Monaco
2. Russia
   Latvia

Positioned in Latvia, Riga Castle is still considered an official home of the Latvian president. It sits alongside River Daugava in Latvia's capital, Riga. A fire in 2013 caused substantial damage, which launched a series of repairs.

1. Germany
   France
2. Cyprus
   Finland

You'd think that after 500 years, Château de Chambord in France would finally be finished, but it was never entirely completed. Today it is a UNESCO World Heritage Site and hosts more than 20,000 tourists every day.

1. France
   Spain
2. Portugal
   Netherlands

The Alhambra in Granada, Spain, is a colorful structure. Named in the Arabic for "the red one" or "red castle," its towers and walls give off a red tint, a nod to its moniker. Various rulers throughout history tried their hand at remodeling the structure.

1. Czech Republic (Czechia)
   San Marino
2. Ukraine
   North Macedonia

Houska Castle is another magnificent structure in the Czech Republic (Czechia), except this one is a wee bit scary. The castle is said to sit atop the "gateway to hell," controlling the flow of demons entering the world. Well, we'll vacation elsewhere.

1. Croatia
   Belarus
2. Poland
   Sweden

Malbork Castle, also known as the Castle of the Teutonic Order in Malbork, is located in Poland. It's the largest castle by land area in the entire world. German Crusaders are credited with its construction.

1. Poland
   Belgium
2. Finland
   Slovakia

What's left of Spiš Castle in eastern Slovakia sits on top of a site where a former castle once stood. The grounds cover 10 complete acres, making it one of the largest castle sites on the continent.

1. Ireland
   Germany
2. Greece
   Bosnia and Herzegovina

Germany's Burghausen Castle is another world record holder, this time for "longest castle," as confirmed by Guinness World Records. This member of Europe's "Big 3" (that's the third-largest castle on the continent) was started in the 10th century.

1. Montenegro
   Switzerland
2. Luxembourg
   Austria

Austria's Hohensalzburg Castle was the brainchild of Archbishop Gebhard I of Helffenstein, who wanted the castle built to demonstrate the power of the Catholic Church. Salzburg Archbishops lived there until the early 19th century.

1. Russia
   Croatia
2. United Kingdom
   Denmark

Located in Northumberland, England, Chillingham Castle boasts its unique breed of cattle, appropriately named Chillingham Cattle. The herd is white and has red ears.

1. Norway
   Kazakhstan
2. Cyprus
   Scotland

Scotland's Eilean Donan is a popular castle inside its nation's borders and a favorite of tourists far and wide. It has appeared in various movies, including 1999's James Bond flick, "The World is Not Enough."

1. Romania
   Serbia
2. Vatican City
   Moldova

Vlad the Impaler was said to have been imprisoned for a time in this Romanian castle in Hunedoara. You're not familiar with Vlad the Impaler? Well, it's believed he was the inspiration behind Bram Stoker's Dracula.

1. Belgium
   Turkey
2. Greece
   Sweden

Located in Belgium, the Gravensteen had a less than stellar history, prompting some to call for it to be razed. And, it was ... almost completely ... until some local preservationists saved the site for its historical significance and architectural details.

1. Kazakhstan
   Germany
2. Switzerland
   Moldova

Rheinfels Castle, located within sight of the Rhine River in Germany, nearly fell to Napoleon's troops in the late 1700s. Though it's not quite the same, part of the original castle still stands ... roughly one-third of what was originally built.