While Formula 1 looks excitedly to new tracks in Vietnam, and a proposal in Miami, some of the most historic venues in the sport's history remain at the forefront.
Circuits such as Silverstone, Monza and Spa-Francorchamps have been fixtures across multiple eras of motor racing.
Silverstone started life as an airfield, but is today a world-class permanent racing facility, so plenty of changes have been made along the way.
Check out the interactive tool below to see how six of the most-changed venues in F1 history have altered over their lifetimes.