The arc has been labelled the "highest swing in the world" at 120m, located at the Doolans Creek Gorge, spanning the Horn and Carrick mountain ranges, alongside the 134m Nevis Highwire Bungy.
The high-velocity swing will propel its passengers at 125kmh, after they access it from a 70m-long walkway and launch pad suspended over the gorge.
In a huge feat of engineering and technological innovation, 150 tonnes of concrete was poured into anchor blocks drilled deep into the hillside either side of the gorge, from which four 550m-long cables have been suspended to hold the walkway and launch pad.
AJ Hackett Bungy New Zealand co-founder Henry van Asch said the wait was finally over for all those in the company who had visualised and worked on the multimillion-dollar project for more than two years.
"The anticipation amongst those in the adventure-tourism industry in Queenstown and throughout New Zealand has been tremendous and there's no doubt the Nevis Arc will join the Nevis Highwire Bungy as one of the must-do thrill and adventure activities in New Zealand.
"I guarantee people will be blown away - you'll accelerate 6 seconds towards rock faces and reach speeds of 125kmh or more."
Mr van Asch said people would swing out over the valley in an arc of 80m or 120m, depending on the "fear level" they had chosen, and they could complete the swing forwards, backwards, alone or with a friend.
"It will be extreme and exhilarating all at once."
Complementing the Nevis Arc was a new, architecturally designed 220sq m "rural-urban style" base building, built between the Nevis Highwire Bungy and the Nevis Arc to cater for the thrillseekers.
The sunny glass-panelled building maximised views of the unique landscape and adventure activities and housed Internet kiosks boasting latest-model iMacs for people to instantly upload their jump or arc images and share them with friends and family around the world.
"We envisage that the Nevis area will become an adventure-tourism destination in its own right, an unforgettable experience that incorporates the Nevis Highwire, Nevis Arc and other activities we've got planned for the area," Mr van Asch said.
The Nevis Arc would cost $170 for adults, $110 for children, and a tandem arc would cost $300.
Those keen to do the ultimate combo of both Nevis Arc and Nevis Highwire Bungy would be able to do so for $350.
The first paying customer to use the Nevis Arc is due to drop at 11.15am today.
