As a young adult, he landed a gig as house pianist for jam sessions at Club 54 in Heidelberg.

Source: https://hudsonvalleyone.com/2023/04/10/jazz-musician-and-local-treasure-karl-berger-dies-at-88/

Built in 1386, Heidelberg is considered to be Germany’s oldest university.

Source: https://www.freepressjournal.in/education/german-universities-act-catalysts-between-india-and-germany-as-opportunities-open-up-for-indian-students

Christian's best finish (fifth) came in 1949 at Heidelberg Raceway.

Source: https://www.wralsportsfan.com/everything-you-need-to-know-about-nascar-and-its-history-in-north-carolina/20879232/

Dozens of supporters gathered outside the court in Weinheim, north of Heidelberg, to protest against the verdict and Germany’s pandemic restrictions.

Source: https://s24526.pcdn.co/wire/nation-world/1594480/german-doctor-jailed-for-illegally-issuing-mask-exemptions

I took his advice, leaving the N3 freeway just south of Heidelberg and travelling the R23 via Standerton and Volksrust.

Source: https://www.citizen.co.za/travel/hooked-by-fishfriendliness-and-a-feral-cat/

Last year, an 18-year-old man opened fire in a packed lecture theatre at Heidelberg University, killing one person and wounding three others before killing himself.

Source: https://www.irishexaminer.com/world/arid-41090047.html

Surrounded by tracks from several animals, the footprints are thought to belong to the extinct Heidelberg man (Homo heidelbergensis).

Source: https://en.mehrnews.com/news/200725/Oldest-human-footprints-found-in-Germany