Mentioned by Trip101
Traveling To Le Havre, France - 10 Of The Best Places To Visit
"This marvelous garden is unique in the way that the harbor and the city are spread out below the hilltop where the garden is situated, and for the way it acclimates to what was once a 19th-century fortress. Purchased by the city in 2000, this botanical paradise was opened to the public in 2008. As you enter you walk past the antiquated blockhouses of the 19th-century fort and enter a realm of outdoor garden beauty, organized by hothouses and plots according to the geographic source of the plants they nurture."