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The Old Synagogue Building in Pretoria. It is now no longer used as a Synagogue but is now a Grade II Provincial Heritage Resource and protected under the National Heritage Resources Act (25 of 1999). The infamous Treason Trial took place at this Synagogue.
References
https://en.wikipedia.org/wiki/Pretoria#Synagogues_and_Jewish_congregations
Further Reading
https://www.sahistory.org.za/topic/treason-trialists-1956
https://www.sahistory.org.za/article/treason-trial-1956-1961
https://www.sahistory.org.za/.../treason-trial-foreword-chief-albert-luthuli- book-helen-joseph-1963