2) This is from an exhibit in Denmark by Danish theorist and curator Lars Bang Larsen. A psychedelic light tunnel. Found on Copenhagen tourist site
3)Hypnotic, spellbinding, trance inducing
4) This is a light tunnel where you can walk through and experience crazy colors and moving lights. Something like this is just really hypnotic, it pulls you in and just overloads your brain with crazy sensations. Moving lights and also sounds apparently make this tunnel a serious visual stimulus and it is almost an illusion of sorts.