This attraction is not to be missed. Our main focus for our three week trip were the archeological sites so it's no wonder we loved the Hypogeum. But even if archeology is not your thing the hypogeum is fantastic and really special. The architecturally carved vaulted ceiling room is a marvel of engineering and creativity.
The tour is very well organized (only 10 people per hour tour so you MUST reserve in advance) and very informative. There is a 10 minute video which is very interesting and each person is given an audio guide (available for most languages) that is automatically started at each viewing stop.
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