The filmmakers had considered green screen or digital sets, but ultimately opted for the real thing. They decided to build the upper portion of the tower on top of a mountain so that the actors would really appear to be thousands of feet in the air, even though in real life they were never more than a 100 feet (30 meters) off the ground.
The two lead actresses did the bulk of their own stunts.
In a 2022 interview with Find Your Film, Scott Mann detailed how and why they shot the film on location with the actresses using support wires on a constructed tower vs in a studio: "Let's be honest, with a film like this, you could go green screen and you could do all these things and do a studio version, which would probably cost hundreds of millions of dollars just to make it look kind of real inside a studio because there are very hard things to do in a studio: bright sunshine, light, the wind, the elements, all the things you don't realize are there until you get there anyway. They are very hard to replicate and very expensive. So we went completely away and we stripped it right down to have a core team of us during covid time. We had these IMAX-sized cameras, went up and basically found the top tip of a mountain that had this big dropoff. And then we built the tower sections by the mountain and that enabled us to film pretty much everything for real with the girls on top of the tower and then if you ever looked right down, there was an element where we had to stitch in ground that we shot elsewhere in the desert to feel it... But by and large, the whole thing is real. It's the real structure, they're really up there, and more than anything, the elements that beat them, the whipping around and everything, they're all very real."
According to director Scott Mann, a smaller-scale version of the real 2000-ft B67 TV Tower was built by the same company that built the original B67 tower. Sections were rebuilt on the plateau of a 2000-ft cliff in the Shadow Mountains of the Mojave Desert so that filming occurred at the height of the actual TV tower.
The 2000 ft B67 TV Tower that Becky and Hunter climb is a real television tower. According to the director, the film was based on the KXTV/KOVR radio tower that is also known as the Sacramento Joint Venture Tower. It is a guyed communication tower in Walnut Grove, California. Many base jumpers throughout the years have illegally trespassed on the property and have climbed the tower in order to jump off and parachute to the ground. Also the Walnut Grove's location has made it the site of a rare collection of very tall radio and television transmission towers. The KXTV/KOVR radio tower is a 2,049 ft (625 m). Likewise the imaginary TV tower depicted in the film is also claimed to be above 2,000 feet tall according to Hunter.