Modern F1 is dominated by a very specific sort of circuit: the Hermann Tilke.
The renowned track architect has an impressive list of tracks to his name: the tracks of Malaysia, Bahrain, China, Korea, Singapore, Valencia, Abu Dhabi and India all sprung from his drawing board. Next year they'll be joined by the new American Grand Prix venue in Texas.
He was also involved in the redesign of Silverstone, Nurburgring, Hockenheim, Monza and Catalunya. If it's former circuits you're after, he was involved in the redesigned Osterreichring (A1-Ring) and Fuji.
And the track for the 2013 American race in New Jersey? Yep, you guessed it.
His tracks divide opinion among fans of the sport. His supporters say he produces safe, quick tracks with a variety of corners and good overtaking opportunities. Tilke tracks are wide, tend to feature several heavy braking zones and invariably have a very long straight or two.
His detractors say he designs soulless, bland, characterless circuits. Too sanitised, too smooth, and the overly kind runoff areas mean there is no punishment for error.
Perhaps he just draws the same track over and over again, with the corners in a different order.
Whatever we fans think, Bernie Ecclestone loves him, and no doubt he'll be around for a long, long time.
But what if he retired tomorrow, and the FIA decided to look to established circuits for the future? Here's a list of tracks which (though not all realistic options) would produce interesting Grands Prix.