Hermann Tilke's creations dominate the modern Formula One calendar.
The prolific track architect's first full circuit redesign was done in 1995. The fast, sweeping Osterreichring disappeared from the Styrian countryside, replaced by a shorter, slower circuit which is now known as the Red Bull Ring.
Sepang in Malaysia was next, followed by the likes of Shanghai, Bahrain and Marina Bay. In between, he oversaw changes to existing venues such as Catalunya and Hockenheim.
Of the 19 venues hosting a race in 2014, Tilke had a hand in 10 of them. They all share common features such as huge straights, tight hairpins and—perhaps—far more corners than necessary.
Fans of Tilke say his circuits provide overtaking opportunities and good, safe racing. Critics say they're bland, identikit copies of each other with overly forgiving run-off zones, zero character and even less soul.
Both sides are right. They do meet the needs of modern F1—but at the cost of variety and challenge. Wouldn't it be nice if they had more in common with the classic, organic tracks of days gone by?
Now, it's their chance to get some revenge.
Here are five of Tilke's creations, re-designed in the manner of circuits of old.