The Venerable Oak of the Botanical Garden

The city has drawn a quiet zone around this oak to keep visitors' feet off its roots. The périmètre de tranquillité exists because soil compaction is what kills old trees in busy gardens long before age does. Geneva's cantonal inventory rates this one's vitality as poor and its stage as senescent, which is less a death notice than the reason the perimeter is there at all. It has earned the trouble. The City of Geneva's own museum trail names this exact tree and cites an inventory number that matches the register's, digit for digit, which is about as close to a positive identification as a tree gets. The trail dates it to 1719. That makes it roughly three centuries old, the elder of the botanical garden's living collection, and 710 centimetres round the trunk. The same account says it once stood beside a Roman road that crossed this ground long before anything botanical did. The Conservatoire et Jardin botaniques only moved here in 1905, so the oak had been growing for 186 years before the garden arrived around it, and it is still the oldest thing inside the fence. The 1719 date comes from that trail article rather than from a ring count or an archive entry, so treat it as a good estimate rather than a birth certificate. The Avenue de la Paix gate is the nearest way in.