A Polish adrenaline junkie has spent the day hopping his BMX style bike up nearly stairs to the top of the Eureka Tower.
A Polish adrenaline junkie has spent the day hopping his BMX-style bike up nearly 3,000 stairs to the top of Melbourne's tallest building, the Eureka Tower.
It sounds completely mad but if he does it, he'll claim a world record.
Dean Felton has been watching him.
Matt and Sarah, it's certainly a lot easier to take the lift to the top of the Eureka Tower but that's no challenge to a man like Krystian Herba, from Poland.
He describes himself as an extreme cyclist.
He's done this sort of thing all over the world - in Dubai, Frankfurt, Vienna and China.
Setting and breaking world records, usually his own, needless to say, for both speed and endurance.
The rules are pretty simple: no support from either hands or feet, everything has to happen on two wheels.
One problem today - even with 89 floors, the Eureka Tower doesn't have enough stairs to support a world record attempt.
So after the first 77 floors, Krystian had to go back down to ground level and go through the ordeal again, this time, right to the very top of the building.
But he emerged from the stairwell and those 2,919 stairs in surprisingly good shape.
(CHEERING AND APPLAUSE) After first 77 floors, I knew that I am strong enough but I have to keep my balance, don't jump too fast, and it will be OK.
and it was.
Maybe even more remarkable - Krystian's wife Natalia, who ran alongside him every step of the way, carrying their 3-month-old baby, who, I might add, slept a lot of the way.
She was very calm during the.
all the way.
She was perfect.
So what's next for Krystian?
Well he's waiting on the construction of Europe's tallest building, but, in the meantime, maybe just a good hot Radox bath.