Spa Francorchamps is one of the greatest racing circuits in the world in the most stunning setting, the Ardennes forest.
Despite being only half as long as the original road circuit from the 1920s it's still a high speed rollercoaster of elevations, bumps and flowing sequences demanding precision, confidence and patience. The daunting run down to and then compression through Eau Rouge is spectacular whilst Pouhon and Blanchimont are as challenging and rewarding as you'll find anywhere.
Spa hosts F1 as well as many other top championships so there's plenty of space and good facilities.
Spa is fantastic for all comers and all cars and is possibly the ultimate track day circuit. But don't underestimate the challenge and be very careful when it's wet, there's over 100 Metres of elevation change and the circuit becomes highly variable.