From the everyday suburban dwelling of BTK Killer Dennis Rader to mad preacher Gary Heidnik's basement pit full of sex slaves, these serial killers' houses are some of the most disturbing places you'll ever see.

Ancient temple to Demeter found in Crete, Etruscan statues uncovered in Italy, millennia-old branding irons used on slaves unearthed in Egypt.

Ancient Roman theater discovered in Crete, history's first written sentence uncovered in Israel, Stone Age child who may have been buried with a wolf found in Finland.

Trophy heads from human sacrifices found in Peru, face of 19th-century "vampire" reconstructed, 85-year-old explorers' cameras recovered in the Yukon.

Vikings swords unearthed in Sweden, World War II "ghost boat" found in California, ancient bog bodies discovered in Germany.

Roman mosaic unearthed in Syria, 300 medieval skeletons found in Wales, tools made by human ancestors 500,000 years ago discovered in Poland.

Ancient Medusa medal unearthed in Turkey, 1,400-year-old Native American canal found in Alabama, Chernobyl disaster's lingering effects revealed in Ukraine.

Ancient Hercules statue uncovered in Greece, 2,600-year-old cheese found in Egypt, 2,000-year-old Roman statues destroyed in the Vatican.

Pre-Inca mass grave discovered in Peru, evidence of ancient parties found on crannogs around the British Isles, 1,500-year-old mosaic unearthed in Israel.

Ancient Ho-Chunk canoe found in Wisconsin, Byzantine mosaic uncovered in Gaza, Bronze Age opium unearthed in Israel.

Jurassic vomit unearthed in Utah, possible tomb of Queen Nefertiti found in Egypt, Dead Sea Scroll fragment located in Montana.