Himmelspforte Wyhlen, Medieval monastery in Grenzach-Wyhlen, Germany.

Himmelspforte Wyhlen is a former monastery in Grenzach-Wyhlen situated at 305 meters elevation and features a Baroque chapel overlooking the Hochrhein valley. The complex includes several buildings that now serve as a residential nursing home with a winter garden and expanded communal spaces.

The monastery was founded in 1303 by siblings Berta and Anna von Nollingen and came under Bellelay Abbey's authority in 1406. During the 18th century, the complex underwent major reconstruction and gained its current Baroque character.

The chapel's name, Maria im Buchs, comes from a statue of Mary said to have been lost in wartime and rediscovered in the nearby boxwood forest in the 15th century. Pilgrimage to the chapel is documented from the late 15th century, and the Baroque high altar with the grace image still shapes its appearance.

The site sits on elevated ground with good views of the surrounding area and is accessible via local paths. Visitors should be aware it now functions as a care facility and access may be restricted.

During World War II, the site served as a work location for constructing Westwall bunkers before briefly functioning as a hospital. This dual role reveals how the place adapted to serve different purposes during difficult times.