Hofburg is the Imperial Palace and it is located between the Golden Roof and the Cathedral of St. James. Hofburg was built as a castle for Archduke Sigmund the Rich in the 15th century, expanded by Emperor Maximilian I in the the 16th century and given a total baroque makeover by Empress Maria Theresia in the 18th century. The interior is equally impressive and decadent; however, to the disappointment of many visitors, you’re only able to view 20 rooms.
Once a hugely important imperial residence, the Hofburg is today made up of various listed buildings and five themed museum areas. There is much to see here, including the stunning Hofburg Chapel, so be sure to give yourself enough time.