To Buda Hill, Castle Hill, the citadel (Budai várnegyed) you ascend by train from Clark Adam Square. Many people live on the hill, and is a lively and vibrant and very interesting residential place - over most of the city. Next to the houses there are many luxury hotels and not any less luxurious chef restaurants.
The street on the Castle Hill, located at the center of Buda, is in the Middle Age style, the Baroque. There are many different styles of architecture, of buildings from different periods in the city and different design and architecture techniques.
In 1987 the citadel was declared as a World Heritage Site. Most of the famous attractions of Budapest are located on Castle Hill on the Buda side: the popular royal palace and inside the National Gallery, the Fishermen's Bastion, Matthias Church, Lion Court, Honday Garden, Savoy Terrace, History Museum of Budapest, Music Museum, Military Museum, Marzipan Museum, Pharmacy Museum and the Museum for Middle Age Jewry.
The Mongols destroyed and caused major havoc to the city. To prevent future damage to that extent, the residents of the city decided to wall the city and build a palace and citadel on the nearby hill, with strategic viewpoints, to protect the city. So they crossed the Danube River and built the citadel on the hill, assuming that the river would make it hard for intruders to attack the city, and that the height of the hill would guarantee its protection.
In the 15th century, the palace was expanded into a castle by King Sigismund, and was the largest Gothic castle in Europe. Later on in the century King Matthias made sure to expand it further.
When the Turks conquered Buda in the 16th century, they turned all the churches to Mosques, as they did with all the Christian areas they took over.
At the end of the 17trh century, after the area was conquered again by the Hapsburgs, Christians from Austria, began a surge of impressive reconstruction. During the rule of the Austro-Hungarian Empire public houses were built here, homes and roads that were impressive and full of glory.
In the 19th century was the Hungarian Independence War, during the period called the "Spring of Nations," in 1848. During the revival against the Austrian Emperor, the Buda Castle was once again damaged. After the war, when the Emperor united Austria and Hungary, the palace was renovated and enlarged, where Franz Joseph was crowned King of Hungary.
After World War I and the fall of the Austro-Hungarian Empire, Horthy Miklós lived in the castle, the ruler of Hungary. The palace then became the political center of the country.
At the end of World War II, the Castle on Buda Hill was the last standing hold of the Nazis. During the fighting between then and the Red Army the Castle incurred a lot of damages.