In Midyat, Turkey, archaeologists uncover the vast underground city of Matiate, stretching across tunnels and chambers carved thousands of years ago.
In Poland, miners uncovered vast salt chambers known as the Crystal Caves, filled with massive halite crystals formed millions of years ago.
In Naples, Italy, a centuries-old tomb at the Santa Maria la Nova monastery may conceal the body of Vlad the Impaler, the prince who inspired the legend of Dracula.
In Florida, construction workers uncover a brick-lined tunnel system beneath a historic neighborhood.
In 1924, construction crews in Washington, D.C. uncovered a labyrinth of tunnels beneath Dupont Circle.
In Italy, explorers uncover an immense tunnel system, revealing a vast subterranean world once thought to be catacombs or escape routes.
In New York City, construction of the Freedom Tower uncovers an old ship buried beneath the ground.
In Jordan, archaeologists make a stunning find: a sealed tomb containing 12 undisturbed skeletons dating to the height of Nabataean civilization.
In Seoul, South Korea, workers uncover a massive underground chamber hidden beneath the CitiStar Mall and the subway’s Line 2.
In Denmark, metro construction workers uncover a mysterious 19th-century wood-lined tunnel.