Stretching from one end of the Palais de Tokyo gallery in Paris to the other, these strange translucent tunnels look like human-sized versions of the funnel-shaped webs of grass spiders. Instead of helplessly trapped insects, you’ll find people crawling around inside, their weight supported by nothing more than layer after layer of sticky tape and plastic.

Tape Paris is the latest interactive art installation by Croatian-Austrian design collective Numen/For Use, described as a “stretched biomorphic skin” suspended halfway between the floor and ceiling of the gallery’s main hall. The designers see it as a “site specific, parasitical structure invading an arbitrary location.”

Visitors are invited to climb inside, navigating tunnels that vary in height to enable standing at some points but require crawling at others. Those inside can gaze down at the hazy shapes of onlookers below. The basis of the installation is criss-crossed Scotch tape which is reinforced on the outside with an elastic plastic sheeting.

In addition to other tape structures, Numen/For Use is known for inhabitable string and net installations including a gridded ‘social sculpture’ modeled after dadaist collages and suspended nets inside a massive inflatable bubble forming a sort of adult-sized bounce house.

It’s a spider web so large, a human family could set up furniture and make a home inside of it. But this stunningly sticky creation is no work of nightmarish monster spiders – it’s an art installation made of packing tape by design collective For Use/Numen.

With its long, hollow tubes suspended five feet in the air from surrounding walls and pillars, the packing tape cocoon is like a giant artistic bounce house/jungle gym for adults, who can crawl inside and lounge around, comfortably supported by 117,000 feet and 100 pounds of tape.

“The installation is based on an idea for a dance performance in which the form evolves from the movement of the dancers between the pillars,” For Use’s Christoph Katzler told Fast Company, who produced this video. “The dancers are stretching the tape while they move, so the resulting shape is a recording of the choreography.”

The project – which has grown progressively larger, starting in a small Croatian gallery and then inside an abandoned attic before moving on to the former Viennese stock exchange building pictured – will get a bigger stage than ever in September when it travels to a public space in the center of Frankfurt, Germany.