This "floating railway" is one of the world's oldest monorail systems.

These ruins witnessed the final gathering of the failed Jacobite Rebellion.

This abandoned oil depot produces world's longest echo in a manmade structure.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

A sulfuric hellscape in southern Italy.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

A tree that defies gravity grows in an ancient ruin.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

A submerged archeological park still holds the wonders of a Roman Sodom.