Hofburg Palace

The Hofburg in Vienna was the residence of the Habsburgs in Vienna from the 13th century until 1918. It has been the official residence of the Austrian Federal President since the end of 1946. It houses most of the Austrian National Library as well as various museums and the Federal Monuments Office.More about the story:
de.wikipedia.org/wiki/Hofburg

The Vienna Hofburg is a building complex in the center of the city center that has grown over the centuries. Consisting of 18 wings with 2,600 rooms, the Hofburg is now home to various museums (at least 6), event halls and the presidential office of the Austrian Federal President.
From the Ringstrasse through the Outer Castle Gate to Heldenplatz, flanked by the National Library and the World Museum, through the individual wings and courtyards under the photogenic Michaelerkuppel through to Michaelerplatz at the beginning of the Graben. Sideways from the presidential office to the Albertina...

Vienna is a lively city.
Many attractions. I don't know where to start or stop.
A dream by bike through Vienna to Raeln.