The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

The ruins of a monumental tower in the heart of Lebanese mountains still puzzle archeologists.

The largest hewn stone in history.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A historic arboretum and non-conformist, non-denominational park cemetery.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

An alchemist's "magic door" stands in the middle of a Roman park.

The final resting place of the poets Shelley and Keats.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.