Trieste and the Postumia Caves bus tour

Explore the largest and most visited cave in the Karst region of Trieste, at the Postumia Caves.

Hop on an electric train and ride into the Karstic underground where a fantastic world of caves awaits you. Travel through narrow passages and large rooms, adorned with stalactite and stalagmites to view the most varied shapes and shimmering colors created by nature.

Learn about the types of formations hanging from the ceilings and protruding from the floors, and the process a million years in the making, drip by drip.