Grabbing attention with its pearly white facade and cupolas, the Hofburg was built as a castle for Archduke Sigmund the Rich in the 15th century, expanded by Emperor Maximilian I in the 16th century and given a baroque makeover by Empress Maria Theresia in the 18th century. The centrepiece of the lavish rococo state apartments is the 31m-long Riesensaal (Giant’s Hall).

This is adorned with frescoes and paintings of Maria Theresia and her 16 children (including Marie Antoinette), who look strangely identical – maybe the artist was intent on avoiding royal wrath arising from sibling rivalry in the beauty stakes.