

Gelitin (stylized in lowercase as gelitin) is an Austrian artist collective formed in Vienna. The group was formerly known as Gelatin, and changed their name in 2005. They are known for creating art events in the tradition of relational aesthetics, often with a sense of humor.
One of Gelitin's best known art projects occurred in March 2000. During a six-month lease in a vacant space at the 91st floor of the World Trade Center's North Tower (WTC1), where the lease was secured through a Lower Manhattan Cultural Council program for resident artists, the group of four (then known as Gelatin) removed one of the windows on the same floor and installed, temporarily, a narrow balcony made of secured wooden panels. For a while, a helicopter chartered by the crew flew around the building, taking photographs of the jutting balcony for their upcoming book, The B-Thing, which takes the name of the art project itself. The balcony stood for 19 minutes before being dismantled and the glass pane restored. The book was published in July 2001 and had even, by that time, taken on an air of urban legend.
The floor on which the project was conducted, the 91st, was the topmost one from which anyone could have escaped after American Airlines Flight 11 had struck the North Tower. No one from floor 92nd and upwards survived.
Another of their projects is a gigantic plush toy: a 55-metre (180 ft) reclining pink Bunny installed on Colletto Fava (near Genoa, Italy), intended to remain there until 2025.
In November 2005, the group had a show at Leo Koenig, Inc. in New York, a project called Tantamounter 24/7. The artists called their project a "gigantic, complex and very clever machine", which functioned as a kind of art-copier. The group erected a barrier blocking off one half of the space, locking themselves inside for one week. They asked visitors to insert items that they wanted copied into an opening through the barrier; hand-made copies were later returned through another opening.
Other works include: