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The sunken town of Baiae remains frozen in time, lying on the seabed of the Bay of Naples. Now, marine archaeologists investigate its fascinating secrets.
The Lighthouse of Alexandria is one of the world's original Seven Wonders. Experts investigate its many secrets – did it hold a superweapon?
Thermopylae was the site of an iconic ancient battle. Legend says that in 480BC, 300 Spartan warriors died there – experts reconstruct the lost battlefield.