42 Historical Photos You Have Probably Never Seen Before

51:23
Mesopotamia - The Sumerians

18:04
Schweizer Gold – spurlos verschwunden | Mit offenen Daten | ARTE

20:29
Michelangelo Explained: From Pietà to the Sistine Chapel

3:22:17
3 Hours Of WW2 Facts To Fall Asleep To

37:03
Something Strange Happens When You Follow Einstein's Math

32:54
Mona Lisa (Full Length): Great Art Explained

20:33
He Learned an Ancient Language Experts Couldn’t Solve

10:44