"The Botanische Gärten der Friedrich-Wilhelms-Universität Bonn (6.5 hectares open to public, 3 hectares private), also known as the Botanischer Garten Bonn, is a botanical garden and ...
arboretum maintained by the University of Bonn. It is located at Meckenheimer Allee 171, Bonn, North Rhine-Westphalia, Germany, and open except Saturdays in the warmer months; admission is free on weekdays.
The gardens were originally castle grounds for the Archbishop of Cologne, dating to about 1340, which circa 1650 were fashioned into a renaissance garden. In 1720 the site was reworked as a baroque garden, setting the basic structure of today´s garden, with the rococo Poppelsdorf Palace completed in 1746 by Archbishop Clemens August. When the University of Bonn was founded in 1818, its first garden director, Dr. Christian Gottfried Daniel Nees von Esenbeck (1776-1858), began to focus the garden on scientific botany. By 1900 the garden was second only to Berlin´s within Germany, but it was utterly destroyed in World War II. Reconstruction began after the war and was completed in 1979-1984 with the construction of two conservatories." - (en.wikipedia.org 30.10.2019)
