The world’s largest work of glass art hides in this stunning Taiwanese subway station.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

Go inside to really appreciate this 500-year-old technological masterpiece.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Traditional 15th century Chinese garden in the middle of Vancouver.

This whimsical fountain pays tribute to Toronto's four-legged friends.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

The oldest landmark of Toronto is a testament to shifting sands.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.