The Brocken Garden is an alpine botanical garden on the summit of the Brocken, the highest peak in the Harz mountains of Germany. It lies within the Harz National Park near Wernigerode in the state of Saxony-Anhalt and has a stock of around 1,600 types of plant. These include species that only grow in the Brocken region, like the Brocken anemone or alpine pasqueflower and the Brocken hawkweed, but its main focus is on alpine plants like the white dryad and the Swiss willow.
It is open daily without charge.
Wikipedia https://en.wikipedia.org/wiki/Brocken_Garden
Address 38879, Germany
Coordinates 51°47'53.433" N 10°37'3.077" E