The history of the castle begins in the 13th century, when Mongolian tribes conquered Hungary and destroyed Pest, that was built on the opposite side of the Danube River. At first, a dungeon was built here by King Béla, and later the rest of the castle was built.
For a wonderful lookout over the city, come to the see the complex of the castle day or night. Recommended lookout points are without a doubt the Fisherman's Bastion (Halaszbastya), near the Matthias Church (Matyas Templom) - two must-see sites on the hill.
In the castle area there are many interesting buildings, including museums, a Military History Museum, Museum for Music History and Museum of Trade. In the King's Castle, you can see the National Gallery and the Museum for the History of the city. You can enter a system of underground tunnels, and the tomb of the Turkish slave, Rahman Ali. More interesting sites are the recreated Castle Theater, and the Eagle Statue, Turul Statue, the legendary protector of Hungary.
If you are interested in the history of Budapest, enter the museum of history in the castle.