hall of mirrors

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A carnival or amusement park attraction consisting of a maze or series of passageways lined with mirrors, especially curved mirrors giving distorted reflections.
• noun A confusing or disorienting situation in which it is difficult to distinguish between truth and illusion or between competing versions of reality.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A carnival attraction with curved mirrors that distort the viewer's appearance.
• noun video games, uncountable A glitch in some three-dimensional games where a missing texture prevents part of the scene from being rendered correctly, causing a trail of previously rendered frames to appear instead.