People have always looked to the wonders of the ancient world for awe and inspiration. In the Ancient era, people embarked on dangerous pilgrimages to visit storied sites like the Pyramids of Giza, or the Statue of Zeus at Olympia. While only one of them remains, they still excite us thousands of years later.

Bettany Hughes, author of 'The Seven Wonders of the Ancient World', joins Dan to talk about what they were like when they were first built, and what remains of them today.