Gold coins found under British couple's kitchen floor, 17th-century "vampire" unearthed in Poland, enormous dinosaur uncovered in Portuguese backyard.

Medieval folding chair unearthed in Germany, massive Roman phallus carving found in Spain, 800-year-old murder victims discovered in England.

Possible birthplace of Saint Peter found in Israel, historic UFO photo resurfaces in Scotland, Viking-age arrow uncovered in Norway.

Roman mosaic of Hercules found in Turkey, 500-year-old "goatelope" discovered in Austria, elite grave with 169 gold rings uncovered in Romania.

Historic woolly mammoth remains unearthed in New Mexico, Maya balls made of human ashes found in Mexico, ancient China's bronze recipe unlocked.

Taken by the likes of Rodney Alcala, Harvey Glatman, and the BTK Killer, these macabre photos show how some serial killers used photography to lure their victims and relive their horrifying crimes.

Fashionable Viking accessories found in Denmark, Depression-era cash hoard unearthed in New Jersey, giant-headed prehistoric amphibian discovered in Germany.

Archaeologists find Ice Age "ghost tracks" in Utah, Hitler's gold watch set to go to auction, Slovenian fires set off bombs from World War I.

"Monumental" Roman city uncovered in Spain, England's oldest shipwreck found in Dorset, decades-old murder case solved in New Jersey.

Iron Age skeletons found alongside animal sacrifices in England, Viking artifacts discovered among costume jewelry in Norway, and a hidden van Gogh uncovered in Scotland.

Human bone jewelry uncovered in Russia, pipe tomahawk returned to the Ponca tribe, giant prehistoric kangaroo found in Papua New Guinea.