Perhaps the most romanticised corner not only in Formula 1 but in all of Motorsport. There are so many forces the car and the driver go through in this corner. Drivers struggle to gather the guts required to be flat out, though in modern F1 cars it is definitely easier.
Here’s Fernando Alonso talking about why he loves Eau Rouge.
Eau Rouge is actually only the left hand corner at the bottom of the section. The uphill right hander when the compression of the car is felt is called the Raidillon. The drivers can only see the sky after Eau Rouge driving uphill giving them a challenge.
The name Eau Rouge comes from the stream called Eau Rouge that crosses the track for the first time at this junction. A truly magical corner, loved by drivers and fans alike.