My wife and I love to walk our dog in 6,000,000 m2 Prater park here in Vienna, about 10 minutes away by bike. Every year we collect chestnuts to roast and eat.

When we look at some of the bigger trees, we often think about what they have seen. Maybe the Kaiser rested there while hunting two world wars and an empire ago. The way things are going, some of those trees may still be around after our species has died out.