Nestling at the heart of the left bank’s Jardin des Plantes is this lush tribute to mountain flora. Around two thousand different species are arranged according to continent of provenance, surviving thanks to the microclimate created by the surrounding trees and the shallow valley in which the garden is situated. This also ensures that it remains somewhat hidden, overlooked by the families and joggers who populate the neighbouring gardens. The Jardin Alpin isn’t big – you can cover it in five minutes – but it compensates with its atmosphere of dense verdant calm. One to head to with a book and a long afternoon ahead of you.