Aqueduct
The Burnum aqueduct is entirely underground, so that water stayed cool in the summer and could not freeze in the winter. It is about 32.6 kilometers long. 170m height-difference are between the source and the town. It flowed 86 liters per second.
The location is only partially archaeologically investigated. A pre-Roman Liburnian builder can not be excluded at the moment in accordance with previous studies.
Read more about this topic: Burnum