The Julianaboom

This chestnut has a birthday on record: 4 September 1948, the day Juliana became Queen of the Netherlands after her mother Wilhelmina's abdication. Nijmegen marked the occasion by planting a white horse chestnut in what is now Julianapark, a former cemetery ground in the Altrade neighbourhood turned public park and named for the new queen. It is an ordinary species grown into an unusually well-documented individual, its planting date tied to a specific historical event rather than estimated from growth rings or a park's founding year, the kind of precision most trees on this list do not have. Horse chestnuts are not native to the Netherlands, brought west from the Balkans in the 16th century and adopted so thoroughly into Dutch parks and streets that most residents assume they always belonged. This one has outlived the queen it was planted for by more than two decades, and the country it grew up in has changed monarchs twice since. Julianapark itself is small, free and largely residential in character, a quiet green space east of the city centre with none of Valkhofpark's Roman weight or Kronenburgerpark's fortress history, just one dated tree doing what a planted anniversary tree is supposed to do: mark a date and keep growing past it.