I was flicking through one of my old F1 mags the other day, and I saw the plans for the Hermann Tilke designed circuit in Cape Town that was set to host the South African GP. Obviously the circuit never materialiased, but looking at the track plans it looks like it had the potential to be one of the best new circuits in decades. Some of the corners- like the right hander at the end of the back straight, the fast left hander at Turn 7, the long left hander in the infield- look absolutely thrilling.
Of course, like all Tilkedromes it would have lacked character and history, and maybe it would’ve been pancake flat and therefore slightly boring. But it certainly looks like a potentially excellent circuit. Shame it seems to have been forgotten