There's a room in the Gold Museum (more about that in the Day 3 Round Up later tonight or tomorrow) that only about 20 people are allowed in at a time. A circular door slides open, the group inside exits, you enter, and all the light gets shut off. Chanting is piped in through speakers in the pitch black. There is a glass circle in the floor in the center of the room and circular walls with 'something' on them. Flashes of light started beating with the chanting.