Karmanoia’s Peristal is a complex labyrinth built by a small group of artists. “The makers of the Peristal call it a “mind-altering maze”, and indeed exploring the dark, surrealist spaces of the Peristal, connected by ladders, doorways and slides is a unique experience. The Alice in Wonderland experience was never as vivid”: https://psychedelictraveler.com/2015/04/22/the-peristal/
An intruiging german language mini-doco on the Peristal: https://www.youtube.com/watch?v=dCdIWfa_T4w
