The Lainzer Tiergarten is 2,450 hectares of forest that the Habsburgs walled in so only they could hunt it. A stone wall about 2.3 metres high still runs the whole way round, built on Joseph II's order between 1782 and 1787. Timber was never the point here, so the wood was kept thin and open for the hunt, and the oaks were left to stand and spread until their trunks passed four metres round. Two of them have been cored and put at about 430 and 500 years.
You walk it on marked paths and nowhere else, and that rule is why the animals ignore you: boar cross the tracks in daylight and roe deer graze the clearings. The last court hunt here was held in 1908, and the gates opened to the public in 1919. Beside the tracks the leaf litter is turned over in long patches where boar have rooted through it. At the middle stands the Hermesvilla, the house Franz Joseph built to keep Elisabeth in Vienna; she came for a few days each May. It is a museum now, open only in the warmer months and only at the end of the week.