39K views · 563 reactions | "It was once thought that spiral staircases always turned clockwise to favour a right-handed defender higher up the steps over a right-handed attacker, trying to press upwards." Watch the full video on Youtube  https://youtu.be/yqD6Awe4oBQ Where was the first castle in Britain? What are the key components of a castle? What were the rules of castle warfare? Matt has the answer to all these questions and more. | History Hit | Facebook

2.1M views · 10K reactions | A blast from the past!  Sarychev Volcano (on Matua Island northeast of Japan) was in the early stages of an eruption when an astronaut on the International Space Station captured this video on June 12, 2009—15 years ago today. Sarychev Peak is one of the most active volcanoes in the Kuril Island chain, and has erupted at least 4 times since this video was taken. | NASA History | Facebook

1.6M views · 3.2K reactions | On #MothersDay, meet the incredible #Grandmothers of #OMGIndia! Let’s salute their spirit to pursue education! #FullStory | HISTORY | Facebook