Complex sentence: The most interesting part of the department is the "Illusion room", where people can feel as giants or vice versa, it is the room where visitors can walk on the ceiling, see the dancing robotics technologies and pass through the mirror maze.
Split into simpler sentences: The most interesting part of the department is the "Illusion room", where people can feel like giants or the inverse. In this room, visitors can walk on the ceiling, see the dancing robotics technologies and pass through the mirror maze.