The Habsburgs' overwhelmingly opulent summer palace is now a Unesco World Heritage site. Of the palace's 1441 rooms, 40 are open to the public; the Imperial Tour takes you into 26 of these.
Fountains dance in the French-style formal gardens. The gardens harbour the world's oldest zoo, the Tiergarten , founded in 1752; a 630m-long hedge maze; and the Gloriette , whose roof offers a wonderful view over the palace grounds and beyond.
Because of the popularity of the palace, tickets are stamped with a departure time and there may be a time lag, so buy your ticket straight away and then explore the gardens.