Bad luck pursued the greenhouse of the Parc de la Ciutadella in Barcelona in its early days. The City Council announced a competition to urbanize the grounds of the military citadel, built in the 18th century by order of Philip V, in a large part of the Ribera neighborhood. The jury declared it void. They did not find any good ones. In a second call, with modified rules, the winner was Josep Fontserè.

In the historic Down House, the house where Charles Darwin lived for 40 years in Kent, England, there was a space that was key to developing the theory of evolution that would bring the English naturalist worldwide fame. And it's not the table where he wrote The Origin of Speciesbut rather his garden. There, Darwin spent hours conducting small experiments with plants, such as the so-called Darwin's orchid or Christmas orchid, from Madagascar. It is a very particular species, with an extraordinarily long nectary, over 20 centimeters. The scientist predicted the existence of an insect capable of reaching the hidden nectar. The butterfly would be discovered decades later, confirming an intuition based solely on botanical observation.