State Horticultural Show Leverkusen
Neuland-Park, also known as Neulandpark, is a park in Leverkusen. It was created in the course of the removal of a contaminated site on the former Dhünnaue settlement and was opened in 2005 with the State Horticultural Show. Leverkusen applied for the State Horticultural Show 2005 with the plan to build a park on the Rhine from the secured contaminated site Dhünnaue-Mitte. Due to the circumstances, however, no changes were allowed to be made to the terrain modeling, no deep-rooted trees were allowed to be planted and no artificial water surfaces were allowed to be created on the site. Leverkusen prevailed with the plans, with 37 offices submitting their designs. The 25-hectare site on which the park is located today was a landfill site for the Bayer holding company between 1923 and the end of the 1940s. At the end of 2004, around 150,000 square meters of lawn were sown on the site. In addition, almost 100,000 ground-covers and perennials, 85,000 flowers, 22,000 shrubs and more than 1,000 trees and solitary shrubs were planted on the site. On April 16, 2005, the State Garden Show was opened under the motto "Discovering new territory". Since the end of the horticultural show, the park has been open to the public. The park is maintained both by the city of Leverkusen and by a volunteer community that was founded in 2005.
Source: wikipedia, https://de.wikipedia.org/wiki/Neuland-Park