Heddal stave church is the largest in Norway, and according to a legend it was built in three days by five farmers Interiors Strangeness
Beijing has a 20,000-acre secret underground city, Dìxià Chéng, that was built during the Cold War by 300,000 people digging by hand News
The bad news is the alleged “yeti” remains are those of a bear, but the good news is researchers now understand more about Himalayan bears News
In 1980, chemist Glenn Seaborg solved a centuries-old problem in alchemy and turned a non-precious metal into gold News
Nine Soviet hikers who fled their tent one night and died: the mystery of the Dyatlov Pass Strangeness
Chemist Humphry Davy was the first person in history to inhale laughing gas, and soon he was doing it three times a day News