I spot the towering edifice as I park my car. It seems to be made entirely of pick-up sticks and jenga bricks.
Not a reassuring thought, when you're about to climb aboard Europe's largest wooden rollercoaster - and the first with an 'inversion' - which translates as turning you upside down.
But this rollercoater is the stuff bucket lists are made of.
Potato crisp tycoon Ray Coyle, the founder of Tayto Park and Largo Foods, hopes this rollercoaster will stand for 100 years, as many wooden ones elsewhere have.
Lead rollercoaster designer from the Gravity Group, Korey Kiepert, designed the Cu Chulainn from his office in Ohio in the States.
Nicola Anderson on the rollercoaster
"When you see people come off with smiles you really feel it's worth it because there were a lot of late nights," he says.
In the front seats for the first taste were Ray with Cian Harty (11) from Castlebar, Co Mayo - who has Cystic Fibrosis and whose wish to ride on a major rollercoaster was facilitated by the Share A Dream Foundation.
He couldn't sleep with excitement the night before.
"I'd go again," said Cian afterwards.
"It was really fast - I loved the adrenaline."
Two rollercoaster enthusiasts Dan Cox (23) and Charlotte Phillips (20) who work at Alton Towers in the UK are here "just for fun" rather than to check out the competition.
They were impressed. As was Richard Bannister of the European Coaster Club. He spends his holidays travelling around theme parks and even met his girlfriend in a theme park.
This was his 2,137th ride and afterwards he put it "well up there with the very best in Europe".
"I loved this," he said.
Personally, I hated it. But I know I'm alone on this.