In 1884, the Syria sank after hitting a reef in Fiji—and today its legacy lives on through lighthouses and reconciliation.

From 1811 to 1812, quakes in the central U.S. rang church bells in Boston and caused the Mississippi to flow backward.

• The Whydah Galley sailed into a storm off the coast of Cape Cod and was lost for over 250 years. Until Barry Clifford dove beneath the surface.

On January 3, 1961, the small Stationary Low-Power Reactor Number One (SL-1) exploded at the Idaho National Engineering Laboratory—possibly because of a prank gone wrong.

4,000-year-old megalithic art in the South Caucasus holds the mysteries of an ancient culture.