The remains of the roman Bath can be visited
Roman Castle Buch-Bath

The Roman Fort Buch-Bad is an ancient bath complex that once belonged to the Roman military camp Buch. It is located in Buch, a district of Rainau in the Ostalbkreis, Baden-Württemberg, on the Rhaetian Limes, a UNESCO World Heritage site.
History+
The thermal baths of Fort Buch were likely constructed around 130/140 AD, shortly after the fort itself. Situated approximately 100 meters northeast of the fort's northeast corner, they were utilized not only by soldiers but also by the civilian population of the adjacent vicus. The complex underwent four construction phases. Initially designed as a row-type bathhouse with an unheated changing room (Apodyterium), an assembly hall (Basilica), and various baths (Frigidarium, Tepidarium, Caldarium), it was expanded in the second half of the 2nd century.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://de.wikipedia.org/wiki/Datei:Rainau_Buch_Badegebaeude01.jpg
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: 48.9109, 10.1474