Castle Quarter (Budapest)

The Castle Quarter (Hungarian: Várnegyed) refers to the part of Budapest located within the defensive walls of the Buda Castle complex, corresponding with the medieval royal city of Buda. Located on the Várhegy ("Castle Mount"), it is the oldest part of Budapest. 
The center of the quarter is the area between the Royal Palace and Matthias Church.
Notable sights.
The "Bécsi kapu" ("Vienna Gate") is one of the medieval gates of Buda. Today, it serves as an entrance to the district.
The first fortress on Várhegy was built in the 13th century. Following the devastation during the Turkish occupation the whole building complex was reconstructed. It now it hosts some notable museums and other monuments, among them the national library. can be found next to the complex. 
A well-known church in the country. Its construction started around the same time as that of the castle. The sarcophagus of Béla III of Hungary can be seen within the building. The square in front of the church is called .
The bastion was built in the beginning of the 20th century. Its terrace provides a panorama view of the city.