Trieste and the Postumia Caves. Tour Bus. The largest cavity in the classic Karst and one of the most beautiful nature shows in the world. The most visited tourist cave in Europe. An electric train takes you into the karstic subsoil where a fantastic world of caves, passages and large rooms awaits you, adorned with stalactites and stalagmites of the most varied shapes and shimmering colors that nature has created, drop by drop, in millions of years.
Every week from 14th May