Aesculus hippocastanum is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is a large deciduous, synoecious tree, commonly known as horse-chestnut or conker tree.
Wikipedia https://en.wikipedia.org/wiki/Aesculus_hippocastanum
Coordinates 48°41'45.103" N 2°10'41.937" E