In my opinion, dont miss the hidden passages tour if you'd like a good workout. Lots of interesting things more than the discovery tour
Kamel said it well, but I would like to note that the hidden passages tour has the total darkness demo and much smaller passages, so if you don't do small spaces go with the discovery tour.
Not much they're both much almost about discovering. In a discovery you'd go places that r commonly visited. Hidden tour is one place that u can spend some time in. Usually a cave or a mall ...
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