I'm sure there have been threads like this before, but I'm very curious. There was a recent thread about Red Bull taking an Audi R8 around the Sitges Terramar oval in Spain. This track has fascinated me and I think it'd be cool if we could get a list of all these together. What other tracks are there like Terramar? Preferably just tracks that remain intact in some way. I.E. Riverside is gone, so no.
Only significant one that comes to mind right now is Meadowdale Raceway in Illinois. Great looking road course that was used in the late 50s-late 60s before it was shut down. At one point it had a Monza Wall that served as the last corner. Wish it was still around. If I am correct, I believe the property was recently turned into a park, with a bike path paved where the track had eroded completely.