Discover Helsinki's Plague Park, the Arkansas Tuberculosis Sanatorium, England's inspiring Eyam village ... we don't know about the Romans. Here are seven ancient Roman mysteries still unsolved.

In 1665, the plague returned to England. This was the first major outbreak ... Below are some of his diary entries from the time of the Great Plague: 7 June 1665 Today, I saw two or three houses ...

In Italy, the plague killed more than any war ever had. The cities of Venice and Pisa lost three-quarters of their populations, wiping out entire extended families. In England, the plague took on ...