For the last few years Japanese artist Jun Kitagawa has been installing these giant zippers in public locations around Japan. The 2D and 3D artworks have appeared in buildings, on walls, and even in public ponds, revealing a peek of what lies just below the surface. You can see more over on his blog.
Surprisingly, Kitagawa is not the only artist in Japan working with zippers in public spaces. Artist Yasuhiro Suzuki conceived of a zipper boat back in 2004. The vessel takes advantage of the wake behind the boat to make it look like a giant zipper is unzipping the water. (via Spoon and Tamago)