At the southern end of the Staatspark Karlsaue of Kassel, Germany you can find the Blumeninsel Siebenbergen – an artificial island within the Küchengraben created in 1710 and designed in the year 1820. It is an island on which between April and October a vast number of flowers can be admired. It is a mix between local and exotic plants.
You can reach the island via a bridge over the Küchengraben. The entrance fee is 3 Euros and the island can be visited between 10 am and dusk (between 5 pm and 9 pm, depending on specific day and daylight savings time).