The Smithsonian's Gun Room

National Treasure: The Mold Behind the Miracle of Penicillin (04:55)

The Mysterious Death of Edgar Allan Poe May Never Be Solved (03:41)

Ouija Board: The Mysterious Origins of a Cultural Obsession (03:19)

Apollo 11 Launch: Photographed (03:51)

The Freedom Riders History (05:04)

Civil War (Joan Baez), With Dance Performance By Djassi Johnson and Kevin Boseman (04:23)

3D Preview of Petra by Virtual Wonders (00:39)

Discovery of the Lake Serpent in Lake Erie (01:38)

When Your Great-Great-Great-Grandfather Is a Civil War Hero (28:53)

The Descendants: Jared Miller as Richard Oliver (01:09)

The Descendants: Christopher Wilson as Louis Troutman (01:00)