Potchefstroom is defined by a unique botanical heritage that is most visible in its Oak Avenue, a 6.84 kilometer stretch of oak trees that is recognized as the longest of its kind in the Southern Hemisphere. The avenue, which comprises Chris Hani Drive, Kock Street, Dr Beyers Naudé Avenue, and several other major thoroughfares, contributes significantly to the city’s aesthetic "dignity and character".  The inception of this green corridor dates back to 1910, following a decis