An oasis in the hustle and bustle of the metropolis, the Berlin Botanic Garden is a plant paradise of world importance with a history of over 300 years. It had a forerunner in the early 17th century that came from the princely kitchen and herbal garden which was located in the pleasure gardens of the Berlin castle. Today the Botanic Garden Berlin-Dahlem comprises an area of 126 acres. About 22,000 different species of plants are cultivated here.
The Idaho Botanical Garden has a significant Idaho Native Plant Garden. Would be great to walk through to see what we like.
For a beautiful display of Kansas flora, the Dyck Arboretum. The garden also undergoes important seasonal changes. The UC Garden collection hosts lots of Eastern N. American plants but few from Kansas.
The Royal Tasmanian Botanical Gardens has several interesting plant collections including the world's only Subantarctic Plant House. If I'm ever down under again, I'm putting Tasmania on the itinerary.