Today the citadels and towers of Byblos are the monuments to Lebanon's long-lost past.

BBC: Divided Lebanon's common genes

Just 45 minutes from Beirut is Byblos, a historic coastal city with stunning ancient Roman ruins and a well-preserved Crusader-era castle.

CNN: Beyond hummus and kebabs: Touring a delectable Lebanon

Just a stroll down from Dr Zalloua's genetic lab, the Mediterranean Sea shimmers in the evening sun, its waves splashing over the ancient harbour of Byblos.

BBC: Divided Lebanon's common genes