A master on the Formula One racing track, triple world champion Ayrton Senna was the pride of Brazil. Twenty-five years after his tragic death in the San Marino Grand Prix, he remains one of the country's biggest sporting legends.

The anniversary of Senna's death on Wednesday -- dubbed "Senna Day" -- will revive the sense of loss and bewilderment that followed the shocking crash on the Imola circuit in Italy on May 1, 1994, that took the 34-year-old's life.