Pedestrians pass by a Jacaranda tree at Parque Eduardo VII, in Lisbon on May 20, 2024. Every spring, the streets of Lisbon are covered in vibrant mauve and blue tones. The image of jacarandas in flower, an exotic tree introduced in the 19th century, has since become one of the postcards of the Portuguese capital. (Photo by PATRICIA DE MELO MOREIRA / AFP) (Photo by PATRICIA DE MELO MOREIRA/AFP via Getty Images)