Himmelgeister Rheinbogen, Nature reserve in Düsseldorf, Germany.

The Himmelgeister Rheinbogen is a nature reserve stretching across 300 hectares along the Rhine with open meadows, farmland, poplar rows, and wooded sections. The landscape shifts between exposed fields and dense forest patches, marked by hedgerows and rows of traditional willows.

The area was designated as a protected reserve in 1993 by the Düsseldorf district government and was expanded and updated in 1996 and 2016. The protection measures were refined over time to better safeguard the habitats.

The name Himmelgeist comes from the old village in whose district the reserve lies; the Rhine bend south of it holds Schloss Mickeln and its park, and two signposted circular routes are promoted to visitors, one running through that park. Since 2020 the riverside has also become a party spot for Düsseldorf residents, a use that conflicts with protection of the shore.

The reserve can be explored on foot using two marked circular routes, one of which passes through the grounds of Mickeln Castle. Sturdy footwear is advisable since the paths vary in condition depending on the season and weather.

The reserve shelters the river bank wolf spider (Flussuferwolfspinne), the sand bee Andrena hattorfiana and the sand lizard. The groyne fields, built to deepen the navigation channel, double as resting and retreat spaces for birds, fish and small organisms. The Himmelgeister Kastanie, a protected natural monument, stood on Kölner Weg until the end of 2015; after storm damage its trunk was carved into a sculpture.