The monument, which was constructed in the first century C.E. and stood along the bustling Appian Way, likely belonged to a wealthy individual who was involved in organizing gladiatorial battles.

This small fort was part of the Antonine Wall, built in 142 C.E. to separate the northernmost reaches of the Roman Empire from lands controlled by local tribes.

The key discovery was an extensive series of stone slabs for flooring and roadways that were laid in the years just after the Romans took control of the area, circa 15 B.C.E.

It's commonly believed that as many as one in 200 men alive today are descended from Genghis Khan, but a recent DNA study found that the Mongol ruler's lineage may not be quite so extensive.

Archaeologists in Constanța, which is built atop the ancient city of Tomis, uncovered skeletons, catacombs, glassware, coins, a Greek inscription, and a piece of a rare ceremonial shield — all dating back to approximately the third century C.E.

Tomb 3 at El Caño Archaeological Park held an elite individual surrounded by gold jewelry, elaborate pottery, and the remains of several other people.

Archaeologists uncovered hats, shoe soles, china, bones, bullets, and even a full bottle of alcohol from the old mining town of Alta, which was destroyed by an avalanche in 1885.

Michele Hundley Smith was 38 years old when she left her husband and three children — then her family spent 24 years wondering what had happened to her.

Members of the ancient Pazyryk culture of Central Asia drilled two holes in a woman's injured jawbone and threaded it together with hair or tendon to create a "primitive prosthetic" circa 500 B.C.E.

The Merchant's House Museum in Manhattan was built by abolitionist Joseph Brewster in 1832 — and a secret passage behind its walls now appears to have been a stop on the Underground Railroad.