The Crystal Maze

The Crystal Maze is a network of 4 times zones which are accessed by certain obstacles, similar to The Krypton Factor. It is based on Fort Boyard.

The 5 Time Zones
At any one time there was only ever 4 zones as the Industrial was replaced with Ocean World in 1993. Industrial got its own back when it replaced Ocean for the 2017 revival.
 * The Aztec Zone
 * The Futuristic Zone
 * The Industrial Zone (Series 1-3 and 2016 Revival Onwards))
 * The Medieval Zone
 * The Ocean Zone (Series 4 to 6)

The Crystal Dome
The Crystal Dome is a geodesic dome at the centre of The Crystal Maze.

Layout Of The Crystal Maze 2017-
The 2017 Crystal Maze zone layout is different to the map shown during the move from zone to zone. In reality the Aztec is in the corner, with Future World next to it and Medieval behind diagnonally across from Future World. Industrial is in the remianing corner but the famous chemical pool and main floor faces the back of Aztec instead of running alongside it.

Refs
https://en.wikipedia.org/wiki/The_Crystal_Maze