The remains of the Abbey can be visited
Stephansabbey

The monastery ruin of Stephanskloster in Heidelberg was the second branch of Lorsch Abbey. Today, only the foundations of this complex are visible.
History+
Stephanskloster was founded around 1090 as a Benedictine monastery. The Benedictine Arnold initially built a hermitage and a chapel on the front summit of the Aberinsberg. Four years later, with the consent of Lorsch Abbey, Zundebold, the provost of the neighboring Michaelskloster, expanded the complex with additional buildings. The location on a then-bare hilltop allowed for monitoring of the Neckar Valley.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://de.wikipedia.org/w/index.php?title=Datei:Stephanskloster_heiligenberg2.jpg&filetimestamp=20060108100814&
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.4196, 8.7042