Hofburg Palace (German - "Hofburg) is a palace building located in Vienna, Austria. Hofburg Palace was once the Winter Palace of the Austro-Hungarian Emperor of the Habsburg Dynasty. Summer Palace is Meiquan Palace. Today's Hofburg Palace is the seat of Austria's presidential residence. From 1275 to 1913, after many times of construction and reconstruction, it finally evolved into the present maze of 18 wings, 19 courtyards and 2500 rooms. The palace is built according to the terrain, divided into two parts: upper house and lower house. Shangzhai is the place where the emperor works, welcomes guests and holds grand activities. Xiazhai serves as a living, lodging and lodging place. Hofburg Palace means palace castle in German. The royal castle is located in the inner city of Vienna. It was here that the Habsburg Dynasty ruled the huge Austro-Hungarian Empire. It records the prosperity and decline of multi-ethnic countries in the era of Franz and Joseph I. It was the residence of the Holy Roman Emperor of Germany until Emperor Franz I declared the disintegration of the Holy Empire in 1806. Today, it is the office of the President of the Federal Republic and the "witness" of various European architectural styles. Whether it's Gothic, Renaissance, Baroque, Rococo or the imitation of classical style at the end of the last century, the Hofburg Palace brings them together. The palace covers an area of 240,000 square meters. It has 18 buildings, 54 exits, 19 courtyards and 2900 rooms. It is known as the city in the city.