The Wave UFO
An otherwordly creation by Mariko Mori (and lots of other people). Appears to be some sort of device that you can enter and have your brainwaves scanned and redisplayed back to you in some form.

Exhibit

Wave UFO, 1999-2002. Brainwave interface, vision dome, projector, computer system, fiberglass, Technogel, acrylic, carbon fiber, aluminum, magnesium. 4.93 x 11.34 x 5.28 m.

Artist

Mariko Mori(and others)