Built in layers
The oldest part, the Swiss Wing, goes back to the 13th century. The domed Michaelertrakt facing Michaelerplatz was only finished in 1893, more than 600 years later.
For six centuries the Habsburgs ruled from here, adding a wing almost every generation. Today the Austrian President works in the same complex. Here's what you're looking at, and what to listen for as you walk through it.

The oldest part, the Swiss Wing, goes back to the 13th century. The domed Michaelertrakt facing Michaelerplatz was only finished in 1893, more than 600 years later.
Empress Elisabeth hated court life. Her apartments here include her own gymnastics equipment, still on the wall, which shocked the court at the time.
The balcony of the New Castle on Heldenplatz is where Hitler announced Austria's annexation in March 1938. The square below is now the site of official ceremonies and protests alike.
The Habsburgs' main palace in Vienna, now home to museums, the Spanish Riding School, the National Library and the President's offices.
No one lives there, but the Austrian President's offices are in the Leopoldine Wing.
The Imperial Apartments, the Sisi Museum, the Silver Collection, the Imperial Treasury and the State Hall of the library, among others.