Seasons1 of 4
Legend says this oak was planted for Napoleon. Its own wood says it was already here. In 2017 researchers dated its germination to around 1778 using tree-ring and genomic analysis, which makes it roughly 22 years old on 12 May 1800, the day Bonaparte reviewed 40,000 troops at Saint-Sulpice a few kilometres along the lake. The local account, which nobody has withdrawn, is that Etienne-Francois-Louis de Loys, who then owned the Dorigny estate, planted the tree that year to mark the occasion. By that tradition it arrived as a transplanted sapling already two decades old and about 15 centimetres thick, which is not impossible and is not what most people picture when they hear that a tree was planted for Napoleon. The two versions sit side by side and we are leaving them there. Either way it germinated before the French Revolution and it is still growing. French Wikipedia records 35 metres of height and 6.75 metres of circumference; some of the 2017 press coverage rounds those to 30 metres and about 7, and nobody has reconciled the figures. What you cannot miss is the hardware. Roughly 140 metres of support cable now run through the crown to hold the limbs against their own weight. The oak stands on the open campus of the University of Lausanne, which has made it something of an emblem, and the metro puts you within a few minutes' walk.
From people who stood here
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Getting there
UNIL Dorigny campus, University of Lausanne
You can recognise it by the support cabling, roughly 140 metres of it strung through the crown, over a trunk 6.75 metres round and 35 metres of height. It stands on the open UNIL campus at Dorigny.
Lausanne metro (M1) to UNIL-Dorigny or UNIL-Sorge station, on the western edge of the city.
In fruit
September to October: acorns drop, and a good mast year buries the ground in them
The line is our estimate of how much there is to see, not a measurement. Typical for this species where this tree stands; exact weeks shift with the year.
Sources
Where the facts on this page come from. The story was written with AI from these sources, and readers who know the tree correct it.