The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A mosaic monument that commemorates the historical struggles of the people of North Macedonia.

This elegant monument to those who fought against fascism is inspired by the shape of the poppy flower.

It's unclear what caused the fire that led to this opulent hotel's demise.